Cold-blooded loneliness: social exclusion leads to lower skin temperatures.
ABSTRACT Being ostracized or excluded, even briefly and by strangers, is painful and threatens fundamental needs. Recent work by Zhong and Leonardelli (2008) found that excluded individuals perceive the room as cooler and that they desire warmer drinks. A perspective that many rely on in embodiment is the theoretical idea that people use metaphorical associations to understand social exclusion (see Landau, Meier, & Keefer, 2010). We suggest that people feel colder because they are colder. The results strongly support the idea that more complex metaphorical understandings of social relations are scaffolded onto literal changes in bodily temperature: Being excluded in an online ball tossing game leads to lower finger temperatures (Study 1), while the negative affect typically experienced after such social exclusion is alleviated after holding a cup of warm tea (Study 2). The authors discuss further implications for the interaction between body and social relations specifically, and for basic and cognitive systems in general.
- SourceAvailable from: Gün R Semin[Show abstract] [Hide abstract]
ABSTRACT: The current research examined the impact of temperature cues on perspective-taking. Individuals often start with their own point-of-view when taking another's perspective and thereby unintentionally project their own perspective onto others, which ultimately leads to egocentrically biased inferences of others' perspectives. Accordingly, perspective-taking is enhanced under conditions reducing this egocentric anchoring. In two studies, we show that perspective-taking is enhanced when participants are exposed to cooler rather than warmer temperature cues. Specifically, this is shown to be the case, because cooler temperatures reduce egocentric anchoring in perspective-taking (Study 2). Results are discussed with reference to the literature on (temperature) grounded cognition indicating a link between cold temperatures and social distance. Hence, whereas earlier research has shown that individuals feel more distant from each other when undergoing cooler thermal experiences, the present research suggests that this thermal experience prevents them from over-imputing their own perspectives onto others.Acta psychologica 05/2013; 143(2):245-251. · 2.19 Impact Factor
- [Show abstract] [Hide abstract]
ABSTRACT: Our survival and wellness require a balance between optimism and pessimism. Undue pessimism makes life miserable; however, excessive optimism can lead to dangerously risky behaviors. A review and synthesis of the literature on the neurophysiology subserving these two worldviews suggests that optimism and pessimism are differentially associated with the two cerebral hemispheres. High self-esteem, a cheerful attitude that tends to look at the positive aspects of a given situation, as well as an optimistic belief in a bright future are associated with physiological activity in the left-hemisphere (LH). In contrast, a gloomy viewpoint, an inclination to focus on the negative part and exaggerate its significance, low self-esteem as well as a pessimistic view on what the future holds are interlinked with neurophysiological processes in the right-hemisphere (RH). This hemispheric asymmetry in mediating optimistic and pessimistic outlooks is rooted in several biological and functional differences between the two hemispheres. The RH mediation of a watchful and inhibitive mode weaves a sense of insecurity that generates and supports pessimistic thought patterns. Conversely, the LH mediation of an active mode and the positive feedback it receives through its motor dexterity breed a sense of confidence in one's ability to manage life's challenges, and optimism about the future.Experimental neurobiology. 09/2013; 22(3):173-199.
- [Show abstract] [Hide abstract]
ABSTRACT: Embodied cognition theory proposes that individuals' abstract concepts can be associated with sensorimotor processes. The authors examined the effects of teaching participants novel embodied metaphors, not based in prior physical experience, and found evidence suggesting that they lead to embodied simulation, suggesting refinements to current models of embodied cognition. Creating novel embodiments of abstract concepts in the laboratory may be a useful method for examining mechanisms of embodied cognition.Cognition 12/2013; 130(3):309-314. · 3.16 Impact Factor
Cold-blooded loneliness: Social exclusion leads to lower skin temperatures
Hans IJzermana,b,⁎, Marcello Galluccic, Wim T.J.L. Pouwb, Sophia C. Weiβgerberb,
Niels J. Van Doesumb, Kipling D. Williamsd
aTilburg University, The Netherlands
bVU University, The Netherlands
cUniversity of Milano-Bicocca, Italy
dPurdue University, United States
a b s t r a c ta r t i c l ei n f o
Received 24 November 2011
Received in revised form 30 April 2012
Accepted 2 May 2012
Available online 18 June 2012
Being ostracized or excluded, even briefly and by strangers, is painful and threatens fundamental needs. Recent
work by Zhong and Leonardelli (2008) found that excluded individuals perceive the room as cooler and that they
desire warmer drinks. A perspective that many rely on in embodiment is the theoretical idea that people use meta-
colder because they are colder. The results strongly support the idea that more complex metaphorical understand-
ings of social relations are scaffolded onto literal changes in bodily temperature: Being excluded in an online ball
tossing game leads to lower finger temperatures (Study 1), while the negative affect typically experienced after
for the interaction between body and social relations specifically, and for basic and cognitive systems in general.
© 2012 Elsevier B.V. All rights reserved.
In the realm of social relations, people often use metaphors such
as “she is cold and aloof” or “she is a warm person.” Temperature
metaphors conveniently establish and explain what is meant, and
often show a remarkable similarity in imagery across languages. In
particular, people's “social temperature” is central to the perception
of relationships. These ideas are reminiscent of Asch's (1946) early
work, which proposed psychological warmth as being the central di-
mension in which people judge one another (see also Fiske, Cuddy, &
Glicke, 2007). But what may be the underlying cause for the strong
metaphorical connections between warmth and social relations? In
later work, Asch (1958) advanced the theory that the metaphor of
warmth may be related to the real, physical experience of warmth.
Metaphors based on physical warmth describing one's social
relations have thus been suggested to combine elements of very
concrete experiences and more abstract conceptions of how people
think of others, learned early in life. In the present report, we will go
beyond such metaphorical perspectives of warmth by suggesting that
temperature changes constitute the “fabric” of social relations, hinging
on specific, basic, and possibly biologically evolved simulators. We
hypothesized and found that people literally decrease in skin tempera-
ture after social exclusion. In addition, we found that “fooling” the fin-
gers, by briefly stimulating them with a cup of warm tea, eliminates
the negative feelings typically experienced after social exclusion.
2. Metaphorical perspectives on warmth and social relations
The recent metaphor perspective in psychology, proposed by cog-
nitive linguists Lakoff and Johnson (1999) and antedated by Asch
(1958), suggested that people experience concrete source domains
(e.g., physical warmth) jointly with abstract target concepts (e.g., af-
fection), and as a result “conflate” the mapping of physical warmth
and affection (see also Johnson, 1997). Recent social psychological in-
vestigations seem to support this learning process: The experience of
subtle manipulations of physical warmth (as compared to coldness)
leads to the perception of another as more sociable (central to the
person characteristic of “warm”) and to greater prosocial behavior
of the participant (Williams & Bargh, 2008).
In addition, subtle manipulations of physical warmth (as compared
to coldness) lead to cognitions that form the basis for communal rela-
tions: people in physically warmer conditions use more verbs (indica-
tive of social closeness; Semin & Fiedler, 1988), are more focused on
relationships in their environment, and construe themselves as having
greater psychological overlap with the experimenter (IJzerman &
Semin, 2009). In other words, due to learning that physical warmth
Acta Psychologica 140 (2012) 283–288
⁎ Corresponding author at: Department of Social Psychology, School of Social & Be-
havioral Sciences, Tilburg University, The Netherlands.
E-mail address: firstname.lastname@example.org (H. IJzerman).
0001-6918/$ – see front matter © 2012 Elsevier B.V. All rights reserved.
Contents lists available at SciVerse ScienceDirect
journal homepage: www.elsevier.com/ locate/actpsy
and affection go hand-in-hand, people seem to develop mental repre-
sentations that include both abstract conceptions of affectionate feel-
ings and the sensorimotor experience of physical warmth, such that
when they are in a warm environment, they will interact as if they are
psychologically closer to others.
tral to such conceptual metaphors. Indeed, experiencing affection al-
most always includes physical warmth (but not vice versa),
integrating the sensorimotor experience of physical warmth into the
resentations of affection do not become an integral part of the mental
representation of warmth (cf. Landau, Keefer, & Meier, 2011). Such a
perspective was confirmed in a different domain by Casasanto and
Boroditsky (2008), who showed the connection between time and
space. Indeed, they find that people's experience of space affects their
perception of time, but not vice versa.
However, in the domain of physical warmth and affection, the effect
ent temperature as lower (for our theoretical background, see also
IJzerman & Koole, 2011; also IJzerman & Semin, 2010; Zhong &
Leonardelli, 2008). Previous work has suggested that conceptual meta-
(Casasanto, 2008), allowing for possibilities to map such effects bi-
directionally through the integration of sensorimotor experiences into
the abstract concept domain. In addition, recent reviews support the
idea that many conceptual metaphors may be dynamic and flexible
(Santiago, Román, & Ouellet, 2011). However, do experiences related
to social relations rest on conceptual metaphors, or, if not, what may
3. Evolved primitives for social relations
We propose that central to answering this question is the function-
ality of physical warmth in social relations and that the body may con-
strain people's learning processes for social relations. One may trace
back our approach to Bowlby (1969), who suggested that 1) people be-
environment, and that 2) close relationships serve security-provision
and distress-alleviation regulatory functions. In addition, Harlow's
(1958) classical work suggested that close, physical comfort may be a
biologically evolved need. He showed that close comfort is necessary
for healthy psychological functioning, as young rhesus monkeys dis-
pared to a wire mother, while those raised with a wire mother had
greater physiological and psychological problems. Harlow's (1958)
findings resonate with and predated the Relational Models Theory,
which summarized people's basic forms of interactions into four ele-
mentary ways (Fiske, 1991).
The mostbasic of these interactiontypes are communal sharing rela-
tionships, which are relationships prototypically implemented among
units. In order to be able to identify how to interactwith whom in what
way, Thomsen and Carey (in press) suggested that people may rely on
evolved primitives for elementary social relations (see also IJzerman &
Cohen, 2011; Williams & Bargh, 2008). Some support for this idea
seems to be derived from developmental work: Priming 18-month old
children with touch in the background of a picture (versus no touch)
significantly increases helping behavior from those infants later (Over
& Carpenter, 2009).
children map their knowledge of social relations, is further buttressed by
findings that securely attached children become more generous in phys-
ically warm conditions (versus cold), whereas insecurely attached chil-
dren lack this effect (q.v. IJzerman, Karremans, Thomsen, & Schubert,
tures, some kind of basic system needs to be in place in order to learn
which kind of relation needs to learn in which way. In other words, a
basic type of model seems to be present among infants to engage in a
ters a bigger parent, it does not map relative size to understand its
trusting relation with the security-providing caregiver. Thomsen and
munal sharing […] coupled with innate input-analyzers that automati-
cally identify some instances […] in the social world”.
4. Warmth as the ‘fabric’ of social relations
Indeed, research has supported that people often rely on perceptual
symbols to represent and retrieve information. Theories on perceptual
symbol systems argue that people's neural architecture for imagery
and perception is the same architecture for conceptual knowledge
(Barsalou, 1999). In order to identify whom to rely on early in life, we
suggest that people come equipped with “evolved simulators,” onto
which later knowledge on sociocognitive metaphors (such as “holding
warm feelings” towards someone) are scaffolded (Mandler, 1992;
Williams, Huang, & Bargh, 2009).
But what kind of simulators may be relevant for social relations?
Fransson, Karlsson, and Nilsson (2005) found provocative evidence
core and skin temperature was much lower than when the baby was in
its cot. Relatedly, loneliness leads to relatively high levels of total pe-
ripheral resistance, whereas people who are more socially connected
ity (Uchino, Cacioppo, & Kiecolt-Glaser, 1996; for an overview see
Cacioppo et al., 2002). A sense of disconnection may lead to vasocon-
striction, a state in which the blood vessels are narrowed, maintaining
body heat in the core, but not the periphery (like one's finger tempera-
ture). Such responses are probably built onto more basic human re-
sponses, work on which suggests that in times of threat (such as
stress, fear or pain), skin temperature drops (Mittelmann & Wolff,
1939). Empirical evidence since has supported this view (e.g., see
Boudewyns, 1976; foranoverview see Rimm-Kaufman& Kagan,1996).
Together, these findings suggest that skin temperature plays a
vital role in interpersonal relations. In other words, when people are
excluded from social interactions, they may literally get colder fin-
gers. Adding to the idea of mental schemas, we suggest that concepts
related to social relations rely on evolved simulators that may sense
physical warmth. Concretely, when people engage in social interac-
tions they should experience bodily temperature re-adjustments. In
order to test this proposition, we used a well-validated interaction
paradigm from social psychology, which has been used in over 70
studies (e.g., see Williams, Cheung, & Choi, 2000; Williams, 2007;
Van Beest & Williams, 2006).1Note that we hereby identify a simula-
tor, and presuppose the possibility of an innate biologically evolved
structure rather than empirically proving this proposition.
5. Research overview
In two studies, we aim to support the hypothesis that people ex-
perience literal temperature changes to process close and affiliative
relations. In our first study, we expected that if participants were so-
cially excluded, skin temperatures would drop. Conversely, in our
second study, we expected that if we artificially stimulated the pe-
riphery of people's hands with physical warmth, people should per-
ceive as if they were again socially connected, causing negative
affect typically experienced after social exclusion to be alleviated.
1A list of these studies is available at http://www1.psych.purdue.edu/~willia55/
H. IJzerman et al. / Acta Psychologica 140 (2012) 283–288
6. Study 1: social exclusion is cold
Forty-one VU University students (60.9% female; Mage=20.32;
SDage=2.09) were alternatingly assigned to the inclusion (nnet=20)
or the exclusion condition (nnet=21). One participant was excluded
for technical failure during temperature measurement.
6.1.2. Procedure and design
In our first experiment, we ran individual sessions as part of an
experiment supposedly on concentration. After entering the lab, partic-
ipants first read and answered questions of a neutral text on the history
of cognitive psychology and behaviorism (unrelated to the purpose of
thepresentexperiment),whichserved asourbaseline measure. All par-
ticipants had a fixed, pre-determined amount of time for the baseline
measure. Participants then played a commonly-used ball-tossing para-
digm, called “Cyberball” (Williams & Jarvis, 2006; Williams et al.,
2000). In Cyberball, the participant and two other ostensible human
players toss around a ball in a computer-generated game. Participants
played as a third player and received the ball every two throws (Inclu-
sion Condition) or did not receive the ball from the “co-players” (Exclu-
social separation from others even in a virtual ball-tossing game has se-
vere detrimental affective consequences (Eisenberg, Lieberman, &
Williams, 2003). Finger temperature of participants' index fingers of
the non-dominant hand was measured continuously through a device
commonly used for industrialcoolers, for a totalof 24 times (with inter-
vals of on average 15.6 s, measured with 0.03125°C accuracy; see also
To control for individual variances in finger temperature, we
obtained baseline temperatures during the reading of the text, with
computed averages over 4.7 measurements (lasting for approximately
7 s each). Baseline temperatures were subtracted from each value
perature variation scores. The resulting variables were analyzed with a
growth-model obtained as a general mixed-model with time of mea-
surement as a continuous independent variable with random effects
and experimental manipulation (exclusion vs. inclusion) as dichoto-
mous independent variables. Participants' average temperature and
time effect were modeled as random. The degrees of freedom were
computed based on a Kenward–Roger method (Kenward & Roger,
1997). The trend of temperature over time was estimated with a linear
and a quadratic component (Aiken & West, 1991). The quadratic com-
ponent was not statistically significant (F(1, 37.7)=1.89, p=0.176)
and thus removed from the model. The interaction between time com-
ponents and experimental condition was computed to estimate the ef-
fect of the manipulation on the trend of temperature over time.
The analyses showed that participants' temperature changed
throughout the experiment, depending on whether they were included
or excluded from their group, F(1, 38)=6.07, p=0.018. Excluded par-
ticipants showed a decrease in finger temperature during the experi-
ment (B=−0.011, t(38)=−2.51, p=0.016), whereas included
participants showed no detectable change in finger temperature
(B=0.005, t(37.9)=1.01, p=0.316; see also Fig. 2). Temperature dif-
ferences between values after the experimental manipulation and the
baseline measurement were compared between the included and ex-
cluded condition.The differenceincreased overtime: When themanip-
ulation was introduced, the difference between included and excluded
participants was 0.099°C, F(1, 38)=0.54, p=0.468; half-way during
the experiment the difference was 0.405°C, F(1, 38)=4.78, p=0.034,
with the excluded group showing a temperature colder than baseline
(Mex=−0.163) and the included group warmer than baseline
(Min=0.242); at the end of the experiment the difference was
0.711°C, F(1, 38)=6.25, p=0.016, with the inclusion group showing
a slight, but non-significant, increase (as compared to baseline)
(Min=0.333), and the exclusion group a decrease of 0.378°C (Mex=
Fig. 1. Participant playing Cyberball, with measurement device connected to non-
Fig. 2. Predicted change in temperature over time, for each participant (dots) and for
the two groups (lines). Green dots indicate participants in the exclusion condition,
black dots participants in the inclusion condition. The green line indicates average
predicted values in the excluded condition, black line indicates averages for included
H. IJzerman et al. / Acta Psychologica 140 (2012) 283–288
−0.378). Participants thus literally had colder skin temperatures after
they were excluded from a group playing a ball-tossing game.2
7. Study 2: how warmth rekindles the ‘soul’
Based on the results obtained in our first experiment, we hypothe-
sized that people's skin temperature ‘simulations’ are important for
people in determining – consciously or not – their affective state. If
this is correct, then artificially inducing warm fingers might alleviate
people's negative affective states resulting from social exclusion. Physi-
cal warmth may fool the conceptual system by creating a state as-if the
relation was present (see Damasio, 1999; IJzerman & Semin, 2009;
Williams & Bargh, 2008), paralleling a sensation of interpersonal
touch. In line with Bowlby's (1969) ideas that 1) people become
equipped withbasic perceptual inputs tocomprehendtheirsocialenvi-
ronment, and that 2) close relationships serve security-provision and
distress-alleviationregulatory functions, we hypothesized that physical
warmth repairs the relationship of those who are excluded. Our hy-
pothesis is supported by recent findings that people use physical
warmth nonconsciously as a self-regulatory mechanism to buffer
against loneliness (Bargh & Shalev, 2012).
In order to measure whether the conceptual system could indeed be
fooled, we requested participants to report their affective states as a
relationship. In earlier research, IJzerman and Semin (2010) found that
priming participants through language with their reported relationship
state induces commensurable results to their real experience.We thus
chose not to ask participants directly about their social experience, but
liable proxy to measure feelings of exclusion (cf. Eisenberg et al., 2003;
for a recent meta-analysis, see Gerber & Wheeler, 2009). In our second
study, we therefore expected that if participants would be induced
with a subtle prime of physical warmth, their negative affect would dis-
appear after social exclusion. We did not expect this effect to occur for
the cold condition.
Eighty-six VU University students (41.9% female; Mage=20.55;
SDage=2.33) took part in a computer-based study, again with a
game of Cyberball.3
7.1.2. Procedure and design
Inthesecondstudy we again excludedor included participantswith
the same ball-tossing paradigm. After exactly 3 min of playing, the
game was interrupted by an ostensible (but preprogrammed) error
screen, forcing participants to request help from our confederate. Our
confederate entered the cubicle holding a glass mug containing either
warm or cold tea and asked participants to temporarily (30 s) hold
the glass, while fixing the ‘error’. Our main dependent variable focused
on the intensity of the average of four negative affective states which
were used in earlier Cyberball research (Williams et al., 2000; Zadro,
Williams, & Richardson, 2004); all answered on a 5-point scale (bad,
sad, tense, stressed, Cronbach's α=0.80; e.g., “I felt bad”; from 1 =
not at all to 5 = very much). Participants were randomly assigned to
one of four experimental conditions.
Participants' reported negative affect served as dependent vari-
able in a 2 (Cyberball: exclusion vs. inclusion)×2 (temperature:
warm vs. cold) between-participants ANOVA.
The analyses showed that participants' reported negative affect
depended on the combination of the inclusion manipulation and the
temperature condition (ηp
ed participantsin the cold condition reporteda greater levelof negative
affect as compared to the other three conditions (F(1, 82)=35.68,
pb0.001, and to the warm tea condition, F(1, 82)=11.22, p=0.001.
The exclusion-warm condition did not differ significantly from the
two inclusion-conditions (Fb1; see also Fig. 3). Participants' negative
feelings in the warm-exclusion condition were thus alleviated, con-
firming the idea that a warm cup can fool the conceptual system by
reducing the negative effects of social exclusion.
2=0.071, F(3, 82)=6.27, p=0.014). Exclud-
8. General discussion
In our two experiments we found that people who were socially
excluded showed a drop in finger temperature. Furthermore, warming
clusion alleviated negative affect typically experienced after social
suffering. Our experiments are in line with the idea that perceptions
of (physical) warmth play a central role in social cognition (Asch,
1946; IJzerman & Semin, 2009; Semin & Garrido, 2012; Semin &
Smith, 2008; Williams & Bargh, 2008). Recent theoretical analyses
have suggested that physical warmth is an inherent part of people's
conceptual system, serving to understand social relations (Landau,
Meier, & Keefer, 2010). In the present research we go beyond these
analyses by suggesting an additional interpretation. Physical warmth
serves to repair the negative feelings of exclusion, and we suggest that
people may use the perceptual system to interpret their social environ-
ment. We thus think that social exclusion leads to a decrease in skin
temperature as an evolved simulator (Barsalou, 2008; IJzerman &
There are a number of issues that need to be addressed. First, one
may be concerned about the relation to earlier research, where specific
emotions have been shown to map onto finger temperature. Ekman,
Levenson, and Friesen (1983) for example found that people's finger
idea is reflected in research on the connection between abstract
concepts and concrete experiences: People estimate temperature as
2To test the robustness of our results against possible outliers, we used a jackknife
methodology: We estimated the model after dropping one participant from the sample,
repeating the estimation for each participant. Results showed that the crucial interaction
(time×condition) remained significant in all jackknife samples, with p-values ranging
from 0.008 to 0.035. Thus, no particular participant was responsible for the effect we de-
scribed in the entire sample. We also analyzed our data by excluding smokers from our
sample, as they often experience greater difficulties in temperature regulation (Cleophas,
Fennis, & van't Laar, 1982). Our effects however remained virtually identical by excluding
smokers, F(1, 28)=3.68, p=0.001.
3Eleven participants were excluded from our analyses as they immediately put the
glass of tea on the table, after receiving it from our confederate.
Fig. 3. Reported negative affect as a function of Cyberball condition and temperature
condition. Error bars represent the standard error.
H. IJzerman et al. / Acta Psychologica 140 (2012) 283–288
higher when primed with anger (Wilkowski, Robinson,Meier, Carter, &
However, specific embodied states are not simple determinants of
specific cognitions and/or behaviors like anger. When priming partici-
pants with psychological closeness (distance), they similarly estimate
parable perceptual states may thus be associated with different affec-
tive or cognitive states, but may perhaps rely on slightly different
multi-modal experiences (Barsalou, 2008). Importantly, the context of
the situation and the complex internal representation of the person
matters (cf. IJzerman & Cohen, 2011). As such, it may be unclear how
specific bodily states can be linked to specific types of emotions. In par-
functionalities, leading us to wonder whether social and non-social
anger relate in terms of their physiological profiles (cf. Wilson-
Mendenhall, Barrett, Simmons, & Barsalou, 2011).
Another important question is the meaning of physical warmth in
relation to relationships. In the present work, we measured finger tem-
perature to assess responses to exclusion and negative affect as a proxy
of the state of participants' relationships. It was important to assess this
indirectly, as we expected that to simply request participants to report
lationship, which research has suggested to a re-experience of the ear-
lier physical “temperature simulation” (IJzerman & Semin, 2010; see
also Barsalou, 2008; Boroditsky & Prinz, 2008; Damasio, 1999). Because
the relationship, one may suggest that exclusion and physical warmth
“simply” evoke hedonically charged cues.
ticipantsfeelmorepositive (IJzerman&Semin,2009;Williams& Bargh,
2008), which strongly points to the idea that physical warmth “repairs”
the broken relationship, and only acquires hedonically charged mean-
ing within a specific context (as also evidenced by the lack of decrease
in negative affect in our inclusion condition). It thus seems that some
kind of conceptual processing is necessary to trigger positive or nega-
tive affective states (see also Kavanagh, Andrade, & May, 2005;
Veltkamp, Aarts, & Custers, 2008). This is further supported by findings
showing affiliative and achievement needs to modulate affect in a
Stroop paradigm (Kazén & Kuhl, 2005). Bargh and Shalev's (2012) find-
or disconnectednessthrough physical warmthfurther attesttoourpro-
posal. Finally, one may be reminded that our conception that sensing
physical warmth has become part of an innate system converges with
Harlow's (1958) classical findings, which suggest that close, physical
comfort is an evolved need.
In addition, the means of the exclusion and inclusion conditions
were nearly identical in terms of magnitude (Minc=0.333 vs. Mexc=
−0.378), which seems to suggest a temperature increase in our inclu-
sion condition. However, this change in our inclusion condition was
non-significant. We think that this may be due to two potential causes.
First, participants in the lab are not likely to be close and communal
matically to other closepartners; seeHäfner & IJzerman, 2011).Inaddi-
tion, previous research finds that cues of psychological distance are
more salient than cues of psychological closeness (IJzerman & Semin,
2010), while feelings of inclusion in a ball-tossinggame may not neces-
& Williams, 2009). We think that having participants interact either
with close others or over-including them in the Cyberball game has
the potential to show the proposed symmetry in temperature changes.
We do hasten to add that we do not mean that social exclusion
does not cause a stress response. In fact, we believe that (very
basic) stress responses are recycled for other (more complex) pur-
poses. By recruiting such basic physiological processes, people early
in life will be able to build reliable social relations, by knowing
whom to rely on, and in what way. Indeed, people's more advanced
cognitive system “re-uses” or is likely to be scaffolded onto more
ancient neural systems (Anderson, 2010; Williams et al., 2009), in
which stress responses form part of cognizing about social relations
(Ganzel, Morris, & Wethington, 2010).
9. How social relations (may) ‘work’: future directions
In terms of the representations of relationships, the link between
physical warmth and affection has often been depicted as primarily con-
stituted of top-down knowledge structures, conceptually linking image
schemas of warmth and affection (Landau et al., 2010). We propose that
such higher order representations are scaffolded onto actual biologically
evolved simulators to mark, sustain, and sanction social relations (Fiske,
1991,1992, 2004;Piaget& Inhelder,1969;Williamsetal.,2009).Thisad-
ditional process is important also for broader issues concerning relation-
ships, as it may lead to different research strategies in for example
treatment of seasonal affective disorder (SAD), antisocial personality dis-
orders, or client–patient relationships (see also Neumann et al., 2011).
We do think that higher order representations of relationship
constitute a very important part of the way that people interact
with one another. In particular, repeated social situations may be-
come “entrenched,” in that the situated conceptualization comes
to differ from the originally evolved simulator (Barsalou, 1999,
2008; Schubert & Koole, 2009), as in the case of internal working
models of relationships (e.g., Johnson, Dweck, & Chen, 2007). Inter-
nal working models of attachment modulate the way that young
children respond to manipulations of physical warmth already
early in life. In fact, IJzerman et al. (in press) found that young chil-
dren who associate close relationships with safety and security
(securely attached children) do become more generous in physi-
cally warm conditions, whereas those that lack this association
also lack this effect (IJzerman & Koole, 2011). In addition, differ-
ences in communality in a given relationship determine the level
to which partners support each other automatically (Häfner &
10. Final remarks
One of the universal aspects of human (social) psychology is to
build and maintain relationships. Classic attachment theories assume
that common building blocks of attachment are necessary in the first
stages of life (Bowlby, 1969). For such elementary building blocks,
evolved simulators may be indispensable. Our research suggests
that physical warmth and social thinking are not just a function of
the cultural (non)conscious structuring of experience. Rather than
associations between colder temperatures and episodes of loneliness,
we propose that evolved simulators are implemented across different
generations, closely linking physical warmth and affection in the
physical body (Caporael, 1997; Kaschak & Maner, 2009; see also
Harlow, 1958). Maternal touch seems to greatly impact the difference
between core and skin temperature, preventing hypothermia, a major
cause of death among neonates. In other words, the re-experience or
perception of physical warmth might act as mechanism promoting
initial survival in a social environment (cf. Kasahara, Takayanagi,
Kawada, Itoi, & Nishimori, 2007), which forms the basis for other
mechanisms that are reliant on higher-order mental representations.
Toclose, wewould like to note that the body's architecture is like-
ly to have developed in order to be able to adapt and bond quickly,
without conscious effort. We suggest that the understanding of ab-
stract concepts like affection through concrete experiences such as
physical warmth is often derived from specific affordances with
which people have become equipped. People mark social relations
through actual changes in bodily temperatures, possibly offering
evolutionary advantages in early life stages.
H. IJzerman et al. / Acta Psychologica 140 (2012) 283–288
We are much indebted to Cor Stoof and the VU Helpdesk for their
continued technical support and Sander Koole, Miguel Kazén, Julius
Kuhl, Justin Saddlemyer, Alan Fiske's International Relational Models
Lab, Larry Barsalou, the editor Michael Kaschak, and one anonymous
reviewer for their inspiring discussions and/or helpful comments on
an earlier version of this manuscript.
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