Sarah Humberg

Sarah Humberg
University of Münster | WWU · Department of Psychology

Dipl.-Math.

About

28
Publications
13,169
Reads
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460
Citations
Citations since 2017
28 Research Items
456 Citations
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2017201820192020202120222023020406080100120140
2017201820192020202120222023020406080100120140

Publications

Publications (28)
Article
Full-text available
Gratitude promotes high quality relationships, but what happens when partners differ in their levels of gratitude? We examined the dyadic nature of gratitude in relationships using six longitudinal datasets (562 couples). Approaching the dyadic effect from the perspective of a “weak-link” hypothesis, we tested if the link between one partner’s grat...
Article
Gradient tree boosting is a powerful machine learning technique that has shown good performance in predicting a variety of outcomes. However, when applied to hierarchical (e.g., longitudinal or clustered) data, the predictive performance of gradient tree boosting may be harmed by ignoring the hierarchical structure, and may be improved by accountin...
Article
Condition-based regression analysis (CRA) is a statistical method for testing self-enhancement effects. That is, CRA indicates whether, in a set of empirical data, people with higher values on the directed discrepancy self-view S minus reality criterion R (i.e., S-R) tend to have higher values on some outcome variable (e.g., happiness). In a critic...
Preprint
Condition-based regression analysis (CRA) is a statistical method for testing self-enhancement (SE) effects. That is, CRA indicates whether, in a set of empirical data, people with higher values on the directed discrepancy S R (self-view S minus reality criterion R) tend to have higher values on some outcome variable (e.g., happiness). In a critica...
Preprint
Full-text available
A central assumption in lay and psychological theories is that people are attracted to potential mates who are similar to themselves in personality traits. However, the empirical findings on this idea have been inconclusive. Only a few studies have considered real-life dating contexts, and the statistical approaches they applied have sometimes spur...
Article
Full-text available
Given that adolescents often experience fundamental changes in social relationships, they are considered to be especially prone to loneliness. Meanwhile, theory and research highlight that both extraversion and neuroticism are closely intertwined with individual differences in loneliness. Extant research has explored the linear main effects of thes...
Article
Full-text available
Research in psychology is experiencing a rapid increase in the availability of intensive longitudinal data. To use such data for predicting feelings, beliefs, and behavior, recent methodological work suggested combinations of the longitudinal mixed-effect model with Lasso regression or with regression trees. The present article adds to this literat...
Article
Previous findings on effects of teachers' judgments on student learning have been contradictory leading to the question of what kinds of judgments are most beneficial: accurate or (overly) positive ones? In this study, we provide the first competitive test of prominent but contradictory hypotheses regarding the consequences of teachers' judgments i...
Article
The growing availability of intensive longitudinal data has increased psychological researchers' interest in ideographic-statistical methods that, for example, reveal the contemporaneous or lagged associations between different variables for a specific individual. However, when researchers assess several individuals, the results of such models are...
Article
Full-text available
Response Surface Analysis (RSA) is gaining popularity in psychological research as a tool for investigating congruence hypotheses (e.g., consequences of self-other agreement, person-job fit, dyadic similarity). RSA involves the estimation of a nonlinear polynomial regression model and the interpretation of the resulting response surface. However, l...
Article
Congruence hypotheses play a major role in many areas of psychology. They refer to, for example, the consequences of person-environment fit, similarity, or self-other agreement. For example, are people psychologically better adjusted when their self-view is in line with their reputation? A valid statistical approach that can be applied to investiga...
Preprint
Full-text available
Congruence hypotheses play a major role in many areas of psychology. They refer to, for example, the consequences of person-environment fit, similarity, or self-other agreement. For example, are people psychologically better adjusted when their self-view is in line with their reputation? A valid statistical approach that can be applied to investiga...
Article
Full-text available
Across psychological disciplines, grandiose narcissism and self-enhancement have been treated as two closely related constructs. However, empirical research has not yielded conclusive insights about their association: It is currently unclear whether self-views of narcissistic individuals are more enhanced, in comparison with some criterion value, o...
Preprint
Across psychological disciplines, grandiose narcissism and self-enhancement have been treated as two closely related constructs. However, empirical research has not yielded conclusive insights about their association: It is currently unclear whether self-views of narcissistic individuals are more enhanced, in comparison with some criterion value, o...
Article
Full-text available
Even though environmental contexts have been associated with personality development, little attention has been paid to individuals’ psychological perceptions thereof. Basic psychological needs theory assesses environments based on their levels of autonomy, competence, and relatedness support. In order to better understand the factors that drive pe...
Article
Full-text available
Research on narcissists’ explicit self-esteem (ESE) and implicit self-esteem (ISE) is characterized by a wide array of competing hypotheses and inconsistent empirical findings. Using data from 18 samples (total N = 5,547), we moved beyond classical null-hypothesis testing and employed an information-theoretic approach combined with Response Surface...
Article
Full-text available
Empirical research on the (mal-)adaptiveness of favorable self-perceptions, self-enhancement, and self-knowledge has typically applied a classical null-hypothesis testing approach and provided mixed and even contradictory findings. Using data from five studies (laboratory and field, total N = 2,823), we employed an information-theoretic approach co...
Article
Full-text available
Response Surface Analysis (RSA) enables researchers to test complex psychological effects, for example, whether the congruence of two psychological constructs is associated with higher values in an outcome variable. RSA is increasingly applied in the personality and social psychological literature, but the validity of published results has been cha...
Article
Full-text available
Response surface analysis (RSA) is a statistical approach that enables researchers to test congruence hypotheses; the proposition that the degree of congruence between people's values in 2 psychological constructs should be positively or negatively related to their value in an outcome variable. This is done by estimating a polynomial regression mod...
Article
Full-text available
Narcissists are assumed to lack the motivation and ability to share and understand the mental states of others. Prior empirical research, however, has yielded inconclusive findings and has differed with respect to the specific aspects of narcissism and socioemotional cognition that have been examined. Here, we propose a differentiated facet approac...
Article
Full-text available
Dyadic similarity effect hypotheses state that the (dis)similarity between dyad members (e.g. the similarity on a personality dimension) is related to a dyadic outcome variable (e.g. the relationship satisfaction of both partners). Typically, these hypotheses have been investigated by using difference scores or other profile similarity indices as p...
Article
Full-text available
How can the consequences of self-enhancement (SE) be tested empirically? Traditional two-step approaches for investigating SE effects have been criticized for providing systematically biased results. Recently, we suggested condition-based regression analysis (CRA) as an approach that enables users to test SE effects while overcoming the shortcoming...
Preprint
Dyadic similarity effect hypotheses state that the (dis)similarity between dyad members (e.g., the similarity on a personality dimension) is related to a dyadic outcome variable (e.g., the re- lationship satisfaction of both partners). Typically, these hypotheses have been investigated by using difference scores or other profile similarity indices...
Article
Full-text available
Despite a large body of literature and ongoing refinements of analytical techniques, research on the consequences of self-enhancement (SE) is still vague about how to define SE effects, and empirical results are inconsistent. In this paper, we point out that part of this confusion is due to a lack of conceptual and methodological differentiation be...
Preprint
We provide a first systematic investigation of the most prominent hypotheses about the impact of mate value on interpersonal attraction in real-life early-stage romantic encounters. Using Response Surface Analysis, we simultaneously examined how (a) people’s perception of their own mate value, (b) their perception of a potential partner’s mate valu...
Preprint
We investigated whether positive partner illusions (i.e., perceiving a romantic partner more positively then she/he actually is) and their beneficial interpersonal consequences already occur in initial romantic encounters. In a real-life speed-dating context, 398 heterosexual singles (aged: 18-28) indicated their perceptions of their dating partner...
Preprint
Response Surface Analysis (RSA) enables researchers to test complex psychological effects, for example, whether the congruence of two psychological constructs is associated with higher values in an outcome variable. RSA is increasingly applied in the personality and social psychological literature, but the validity of published results has been cha...

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