Jan De Houwer

Ghent University | UGhent · Department of Experimental Clinical and Health Psychology

Learning is a central concept in many scientific disciplines. Communication about research on learning is, however, hampered by the fact that different researchers define learning in different ways. In this paper, we introduce the extended functional definition of learning that can be used across scientific disciplines. We provide examples of how t...

We explore the idea that some learning phenomena can be thought of as instances of relational behavior, more specifically arbitrarily applicable relational responding (AARR). After explaining the nature of AARR, we discuss what it means to say that learning phenomena such as evaluative and fear conditioning are instances of AARR. We then list sever...

Many researchers have tackled the question of how behavior is influenced by its outcomes. Some have adopted a non-mechanistic (functional) perspective that aims to describe the impact of outcomes on behavior. Others have adopted a mechanistic (cognitive) perspective that aims to explain the impact of outcomes on behavior. Orthogonal to this distinc...

Human likes and dislikes can be established or changed in numerous ways. Three of the most well-studied procedures involve exposing people to regularities in the environment (evaluative conditioning [EC], approach-avoidance [AA], mere exposure [ME]), to verbal information about upcoming regularities (EC, AA, or ME information), or to verbal informa...

We report two studies on the idea that self-reported gut feelings provide a direct measure of implicit evaluations (i.e., spontaneous feelings) and thus an alternative for implicit measures such as the Implicit Association Test (IAT).

Motivational theories of imitation state that we imitate because this led to positive social consequences in the past. Because movement imitation typically only leads to these consequences when perceived by the imitated person, it should increase when the interaction partner sees the imitator. Current evidence for this hypothesis is mixed, potentia...

Unpublished data collected for the Master Thesis of Gianna Windels ( https://libstore.ugent.be/fulltxt/RUG01/003/146/212/RUG01-003146212_2023_0001_AC.pdf ) Aim of the project: To test whether the IAT can reflect differences in the extremity of valence. All data and materials available at https://osf.io/4hv83/

We apply the shared features principle to the domain of person perception: When one person (target) shares a feature with another person (source), people will make assumptions about various other features of the target. We tested this prediction by conducting three pre-registered studies (N = 695). Participants completed a training task wherein one...

People sometimes emit frequently practiced responses that were previously effective in achieving desired outcomes but are no longer appropriate in the current context. While dual-process theories attribute these action slips to goal-independent, associative processes, we propose that errors in the expectancies about action outcomes contribute to th...

In the evaluative conditioning effect, pairing neutral stimuli (conditioned stimuli) with valenced stimuli (unconditioned stimuli) changes the evaluation of the former. We examined this effect with a reverse correlation task that assesses how participants visually remember the conditioned stimuli. Importantly, this measure (1) does not require part...

In the attractiveness halo effect, a single known piece of information about a target stimulus (attractiveness of a person) influences assumptions about a host of other attributes about that target (e.g. this person is socially competent or vain). We examined for the first time whether this effect can be updated, that is, whether new information ab...

Instructions allow us to fulfill novel and complex tasks on the first try. This skill has been linked to preparatory brain signals that encode upcoming demands in advance, facilitating novel performance. To deepen insight into these processes, we aimed to explore whether instructions pre-activated task-relevant motoric and perceptual neural states....

In this introduction to the special collection of papers on the relation between learning and personality research, we provide a functional-cognitive framework that can guide interactions between learning and personality researchers. It highlights that learning researchers can treat personality variables as potential (first or second order) moderat...

Numerous studies have demonstrated a link between neuroticism and negative biases. Although some studies suggest that people with high neuroticism give more weight to negative information, others suggest that they respond more strongly to both positive and negative information. We investigated whether neuroticism is related to the evaluation of con...

Impression formation effects – such as the halo effect – and learning effects – such as evaluative or attribute conditioning effects – are often seen as separate classes of phenomena. In a recent conceptual paper, De Houwer et al. (2019) suggested that both may actually qualify as instances of feature transformation, where a source feature (e.g., a...

Fear learning allows us to identify and anticipate aversive events, and adapt our behavior accordingly. This is often thought to rely on associative learning mechanisms where an initially neutral conditioned stimulus (CS) is repeatedly paired with an aversive unconditioned stimulus (US), eventually leading to the CS also being perceived as aversive...

Propositional representations are units of information with a relational content. Their relational nature allows for the six distinctive properties of language of thought representations. Putting relating at the core of language of thought also fits well with the idea that thinking and reasoning are instances of relational behavior. These propositi...

Our behavior towards a stimulus can change as a result of observing a regularity between that stimulus and someone else’s emotional reaction, a type of social learning referred to as observational conditioning. We explore the idea that causal attributions (i.e., the extent to which the observer attributes the model’s reaction to the stimulus) play...

We applaud De Neys (forthcoming) for drawing attention to the interaction between intuiting and deliberating without committing to single or dual process models. It remains unclear, however, how he conceptualizes the distinction between intuiting and deliberating. We propose several levels at which the distinction can be made and discuss the merits...

Relational Frame Theory (RFT, S. C. Hayes et al., 2001) predicts that some topographies of relational responding should map onto one another more closely than others. By extension, training one type of relational responding should differentially improve other relational responses as a function of their relatedness to the trained relation. We invest...

Wood et al. (2022) reviewed arguments in support of the idea that much of human behavior is habitual. In this commentary, we first point at ambiguities in the way Wood et al. referred to habits. This allows us to clarify the question that lies at the core of the debate on habits: To what extent is habitual behavior mediated by stimulus–response ass...

Despite the potential benefits of implicit measures over self-report measures, they are rarely used in real-world contexts to predict behavior. Two potential reasons are that (a) traditional implicit measures typically show low predictive validity and (b) the practical utility of implicit measures has hardly been investigated. The current studies t...

It is important that scientists reflect on their scientific aims and on how to achieve those aims. The report of the ACBS Task Force on the strategies and tactics of CBS research is an important document in that it provides explicit recommendations on what is needed to realize the aims of CBS. In this invited commentary on the report, we reflect on...

We develop a new perspective on various forms of psychological suffering – including attachment issues, burn-out, and fatigue complaints – by drawing on the construct of learned helplessness. We conceptualise learned helplessness in operant terms as the behavioural effects of a lack of reinforcement and in goal-directed terms as the dysregulation o...

People often keep engaging in behaviors that used to be successful in the past but which are knowingly no longer effective in the current situation, so called action slips. Such action slips are often explained with stimulus-driven processes in which behavior is caused by a stimulus- response association and without information about the outcome of...

Evidence increasingly suggests that information about the relation between stimuli can impact responses on implicit measures. Relational implicit measures have been developed to assess such relational information. Such measures provide important theoretical insights for social psychology, since different relations between stimuli may give rise to v...

In this commentary, we note our agreement with many of the statements made by Gawronski et al. (this issue), in particular the idea that implicit bias (IB) is a behavioral phenomenon that can be observed both in the laboratory (e.g., bias in implicit measures; BIM) as well as outside of the laboratory. We also discuss two points of disagreement. Fi...

Research often focuses on one of two ways in which evaluative responses can be established or changed: the effects of persuasive messages and the effects of environmental regularities. While the former depend on the symbolic meaning of words and sentences, the latter are often seen as non-symbolic (i.e., the change in liking is assumed to be driven...

Background and aims Social media use can sometimes become excessive and damaging. To deal with this issue, scholars and practitioners have called for the development of measures that predict social media use. The current studies test the utility of evaluation and self-identification measures for predicting social media use. Method Study 1 examined...

Humans excel in instruction following to boost performance in unfamiliar situations. We can do so through so-called prepared reflexes: Abstract instructions are instantly translated into appropriate task rules in procedural working memory, after which imperative stimuli directly trigger their corresponding responses in a ballistic, reflex-like mann...

Fear learning allows us to identify and anticipate aversive events, and adapt our behavior accordingly. This is often thought to rely on associative learning mechanisms where an initially neutral conditioned stimulus (CS) is repeatedly paired with an aversive unconditioned stimulus (US), eventually leading to the CS also being perceived as aversive...

Our behaviour toward stimuli can be influenced by observing how another person (a model) interacts with those stimuli. We investigated whether mere instructions about a model’s interactions with stimuli (i.e., instructions about observations) are sufficient to alter evaluative and fear responses and whether these changes are similar in magnitude to...

Some learning psychologists refer to relational cues (Crels) and functional cues (Cfuncs) in their analyses of verbal behavior. However, past research about Crels and Cfuncs is limited in two ways. First, there has been relatively little research into how Crels and Cfunc functions can be acquired, and whether such acquisition is similar to the acqu...

Social learning represents an important avenue via which evaluations can be formed or changed. Rather than learn slowly through trial and error, we can instead observe how another person (a “model”) interacts with stimuli and quickly adjust our own behaviour. We report five studies (n = 912) that focused on one subtype of social learning, observati...

Commonly, parenting behaviors are assessed in an explicit way, usually by means of self-reports. Yet under suboptimal conditions, it is expected that parents act more automatically. The aim of the present longitudinal empirical study was to investigate the influence of automatic and explicit parenting cognitions on alcohol use in adolescents and wh...

Evaluative Conditioning (EC) effect is a change in evaluative responding to a neutral stimulus (CS) due to its pairing with a valenced stimulus (US). Traditionally, EC effects are viewed as fundamentally different from persuasion effects. Inspired by a propositional perspective to EC, four studies (N = 1,284) tested if, like persuasion effects, EC...

Evaluative Conditioning (EC) effect is a change in evaluative responding to a neutral stimulus (CS) due to its pairing with a valenced stimulus (US). Traditionally, EC effects are viewed as fundamentally different from per-suasion effects. Inspired by a propositional perspective to EC, four studies (N = 1,284) tested if, like persuasion effects, EC...

People often keep engaging in behaviors that used to be successful in the past but which are knowingly no longer effective in the current situation, so called action slips. Such action slips are often explained with stimulus-driven processes in which behavior is caused by a stimulus-response association and without information about the outcome of...

Introduction: Drunk driving is one of the primary causes of road traffic injuries and fatalities. A possible approach to reduce drunk driving rates is to identify which individuals are at risk of such behavior and establish targeted prevention. Simply asking individuals about drunk driving in real-world contexts would be problematic because of pot...

Objective: Nonsuicidal self-injury (NSSI) is a severe problem, and its prevalence is increasing. To aid prevention and treatment, there is an urgent need for evidence-based measures to identify individuals at risk for NSSI. Measures that probe past NSSI are most promising, but people are often motivated to conceal NSSI behavior. This problem can b...

Our ability to generate efficient behavior from novel instructions is critical for our adaptation to changing environments. Despite the absence of previous experience, novel instructed content is quickly encoded into an action-based or procedural format, facilitating automatic task processing. In the current work, we investigated the link between p...

Research suggests that people sometimes perceive a relationship between stimuli when no such relationship exists (i.e., illusory correlation). Illusory-correlation effects are thought to play a central role in the formation of stereotypes and evaluations of minority versus majority groups, often leading to less favorable impressions of minorities....

According to relational frame theory Cfunc stimuli select which stimulus properties are transformed via derived stimulus relations. To date there has been no demonstration of the selective action of Cfunc control. We provide an analysis of the requirements for such a demonstration, and describe the results from four experiments employing a paradigm...

Little is known about why people behave the way they do in threatening situations. Some theories invoke a transfer of responses from unconditioned stimuli (US) to conditioned threat signals (CS), but this principle goes astray, because responses to the US and CS can differ substantially. The idea that we introduce here is that the pattern of respon...

Attitudes are mental representations that help to explain why stimuli evoke positive or negative responses. Until recently, attitudes were often thought of as associations in memory. This idea inspired extensive research on evaluative conditioning (EC) and implicit evaluation. However, attitudes can also be seen as propositional representations, wh...

Research on automatic stereotyping is dominated by the idea that automatic stereotyping reflects the activation of (group-trait) associations. In two preregistered experiments (total N=391) we tested predictions derived from an alternative perspective that suggests that automatic stereotyping is the result of the activation of propositional represe...

Research on automatic stereotyping is dominated by the idea that automatic stereotyping reflects the activation of (group-trait) associations. In two preregistered experiments (total N=391) we tested predictions derived from an alternative perspective that suggests that automatic stereotyping is the result of the activation of propositional represe...

Research shows that genetic material and environment are engaged in an ongoing conversation, one that dictates both physiology and psychology. In this paper we argue that genetic material and environment are not engaged in a single conversation but rather multiple types of conversations, and offer researchers a set of conceptual tools to better und...

Research shows that genetic material and environment are engaged in an ongoing conversation, one that dictates both physiology and psychology. In this paper we argue that genetic material and environment are not engaged in a single conversation but rather multiple types of conversations, and offer researchers a set of conceptual tools to better und...

Cognitive psychology had a profound impact on psychopathology research. Nevertheless, the fact that cognition cannot be observed or manipulated directly complicates debates about the nature of the mental mechanisms that mediate psychopathology. This is less troublesome for psychopathology researchers who adopt an explicitly pragmatic approach that...

Despite growing awareness of the benefits of large-scale open access publishing, individual researchers seem reluctant to adopt this behavior, thereby slowing down the evolution toward a new scientific culture. We outline and apply a goal-directed framework of behavior causation to shed light on this type of behavioral reluctance and to organize an...

Automatic behavior is supposedly underlain by the unintentional retrieval of processing episodes, which are stored during the repeated overt practice of a task or activity. In the present study, we investigated whether covertly practicing a task (e.g., repeatedly imagining responding to a stimulus) also leads to the storage of processing episodes...

Habitual processes are often seen as the mechanisms underlying various suboptimal behaviors. Moors et al. (2017) challenged this view, arguing that the influence of goal-directed processes may be underestimated in explaining suboptimal behavior. Much evidence for habitual processes in humans comes from studies that used an outcome devaluation test...

Evaluative conditioning is one of the most widely studied procedures for establishing and changing attitudes. The surveillance task is a highly cited evaluative-conditioning paradigm and one that is claimed to generate attitudes without awareness. The potential for evaluative-conditioning effects to occur without awareness continues to fuel concept...

In a highly cited paper, Rescorla (1988) argued that conditioning can be thought of as involving active information seeking and causal reasoning. In this paper, I argue that the full implications of this perspective are yet to be explored. The idea of causal reasoning (a) does not fit well with the association formation models that currently domina...

The Implicit Association Test (IAT) is the most widely used measure to assess automatic evaluations. One classic phenomenon that has been well established both using the IAT and self-report measures of liking is evaluative conditioning (EC), which refers to a change in the evaluation of a stimulus due to its pairing with another stimulus. Research...

Several dual-process theories of evaluative learning posit two distinct implicit (or automatic) and explicit (or controlled) evaluative learning processes. As such, one may like a person explicitly but simultaneously dislike them implicitly. Dissociations between direct measures (e.g., Likert scales), reflecting explicit evaluations, and indirect m...

The year 2020 marks the 25th anniversary of two seminal publications that have set the foundation for an exponentially growing body of research using implicit measures: Fazio, Jackson, Dunton, and Williams's (1995) work using evaluative priming to measure racial attitudes, and Greenwald and Banaji's (1995) review of implicit social cognition resear...

Objective Implicit and explicit drinking self-identity appear to be useful in predicting alcohol-related outcomes. However, there are several different implicit and explicit measures which can be used to assess drinking self-identity. Some of these implicit measures can also capture relational information (e.g., I am a drinker, I should be a drink...

The Propositional Evaluation Paradigm (PEP; Müller and Rothermund, 2019) has recently shown promise as a relational implicit measure (i.e., an implicit measure which can specify how stimuli are related). Whereas the standard PEP measures response times, mousetracking is becoming increasingly-popular for quantifying response competition, with distin...

[This corrects the article DOI: 10.3389/fpsyg.2020.01603.].

One of the most effective methods of influencing what people like and dislike is to expose them to systematic patterns (or ‘regularities’) in the environment, such as the repeated presentation of a single stimulus (mere exposure), two or more stimuli (evaluative conditioning) or to relationships between stimuli and behavior (approach/avoidance). Hu...

The present series of studies examines the causal interaction between expectancy and attention biases in spider fear. Previous studies found that a-priori expectancy does not affect attention bias toward spiders, as measured by detection of spider targets in a subsequent visual search array compared to detection of bird targets (i.e. neutral target...

Under some conditions, people persist in their attempts to control their pain even when no such control is possible. Theory suggests that such pain-control attempts arise from actual pain experiences. Across three experiments we examined how (a) losing control over pain and (b) instructions concerning pain, moderate pain-control attempts. In each e...

In press: Personality and Social Psychology Bulletin Evaluative Conditioning (EC) and persuasion are important pathways for shaping evaluations. However, little is known about how these pathways interact. Two preregistered experiments (total N=1,510) examined effects of EC procedures (i.e., stimulus pairings) and EC instructions (i.e., instructions...

Open access pdf of book (free) available at: www.psychologyoflearning.be xxxxxxxxxxxxxx Paper copies for sale at https://mitpress.mit.edu/books/psychology-learning xxxxxxxxxxxxxxx Book synopsis xxxxxxxxxxxxxx Learning unites all living creatures, from simple microbes to complex human beings. But what exactly is learning? And how does it work?...

Evaluative Conditioning (EC) and persuasion are important pathways for shaping evaluations. However, little is known about how these pathways interact. Two preregistered experiments (total N=1,510) examined effects of EC procedures (i.e., stimulus pairings) and EC instructions (i.e., instructions about stimulus pairings) on auto-matic and self-repo...

The Parallel Episodic Processing (PEP) model is a neural network for simulating human performance in speeded response time tasks. It learns with an exemplar-based memory store and it is capable of modelling findings from various subdomains of cognition. In this paper, we show how the PEP model can be designed to follow instructions (e.g., task rule...

In our recent article (Schmidt, Liefooghe, & De Houwer, in press), we presented an adaptation of the Parallel Episodic Processing (PEP) model for simulating instruction following and task-switching behaviour. In this paper, we respond to five commentaries on our article: Monsell & McLaren (in press), Koch & Lavric (in press), Meiran (in press), Lon...

Background Adherence to inaccurate rules has been viewed as a characteristic of human rule-following (i.e., the rule-based insensitivity effect; RBIE) and has been thought to be exacerbated in individuals suffering from clinical conditions. This review intended to systematically examine these claims in adult populations. Methodology We screened 14...