Grzegorz Sedek
Biographic Data
| ID | 4232270 |
|---|---|
| NAME | Grzegorz Sedek |
| GIVEN NAMES | Grzegorz |
| FAMILY NAME | Sedek |
| SIGNATURE | SEDEK G |
| AFFILIATIONS | University of Warsaw |
| ORCID | 0000-0001-8932-0868 |
| VERIFIED | Yes |
| TOTAL WORKS | 14 |
| TOTAL CITATIONS | 44 |
| WORKS AS AUTHOR | 13 |
| WORKS AS EDITOR | 1 |
| FIRST PUBLICATION YEAR | 1990 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 3 |
Foraging in multi-list recommender interfaces
The foraging paradigm can be applied in research on Multi-List Recommender Interfaces (MLRIs). • Older users find fewer products that match their preferences in MLRIs than younger ones. • The decreased performance of older users in MLRIs is mediated by their reduced exploration, that is inability to switch to new carousels at the right time. • A digital nudge that is activated when a user browses a carousel without interacting with the products o…
Effect of age on susceptibility to the attraction effect in sequential risky decision-making
Our study aims to contribute to the existing body of research on age-related changes in decision-making by investigating susceptibility to the attraction effect across adulthood. Prior studies have produced inconsistent conclusions regarding the decision-making abilities of older individuals, with some portraying them as easily manipulated and risk-averse, while others suggest the opposite. To address this issue, we conducted two experiments usin…
Using stories to assess linear reasoning abolishes the age-related differences found in formal tests
Older adults are known to have difficulty with tests of formal reasoning. Inspired by previous work suggesting an influence of participants’ living ecology on reasoning ability, we examined in a group of 270 younger, middle-aged, and older adults whether presenting transitive reasoning problems (i.e., A > B, B > C, hence A > C) as informal narrative stories rather than formal problems might alleviate age-related declines. Formal materials resulte…
Stereotype threat is linked to language achievement and domain identification in young males
In the present paper, we investigated the link between stereotype threat, school achievement, and domain identification in language arts. We hypothesized that stereotype threat may lead to higher intellectual helplessness, lower working memory capacity, lower achievement, and domain identification but only in young men highly identified with their gender group. To test these assumptions we used self‐descriptive measures of stereotype threat, inte…
Stereotype threat as an antecedent to domain identification and achievement in language arts in boys
A substantial number of experimental studies on stereotype threat explores performance of girls in mathematics. Only few concentrated on gender differences favoring girls in language performance. However, gender differences in a reading test in the Program for International Student Assessment are three times larger than in mathematics. Considerable research indicates that gender differences in achievement and academic attitudes are partly explain…
Chronic stereotype threat and mathematical achievement in age cohorts of secondary school girls
A large body of experimental research on stereotype threat concentrated on immediate consequences of this effect. Far less attention has been given to the underlying mechanisms that may explain accumulative and long-term consequences of stereotype threat. To shed new light on the dynamic of stereotype threat, the current research examined the strength of associations between experience of stereotype threat, working memory, mathematical achievemen…
The impact of background category information on the creation of social cliques
The impact of background category information on the creation of social cliques: The role of need for cognitive closure and decisiveness This article focuses on the role of need for cognitive closure in the process of mental model creation about social relations (i.e. social cliques). We assumed that high (vs. low) need for closure participants tend to rely on background category information when forming social cliques. We predicted that this ten…
Individual differences in prejudice and associative versus rule-based forms of transitive reasoning
Two experiments examined whether individual differences in prejudice are associated with different reasoning styles when targets and nontargets of prejudice are processed in the same context. High-prejudice and low-prejudice participants studied pairwise relations between four persons (one a prejudice target, three nontargets). Stereotypes were made salient by using specific ethnic names and stereotypic traits to define relations between the targ…
Conspiracy Stereotypes of Jews During Systemic Transformation in Poland
The nature and functioning of the conspiracy theories of Jews in present-day Poland have been analyzed using a variety of methodological approaches (surveys, naturalistic experiments, cross-sectional studies). We examine (a) functional differences between conspiracy stereotypes and trait-laden stereotypes of Jews, (b) situational factors of the political milieu that modify accessibility of the conspiracy theories of Jews and their impact on attit…
Uncontrollability as irreducible uncertainty
This paper tests a prediction from the information-processing model of helplessness (Sedek & Kofta, 1990) that during exposure to uncontrollability people experience high levels of irreducible uncertainty. Participants were given either a solvable or unsolvable discrimination task consisting of five problems. After completion of each problem participants evaluated the probability of all solution hypotheses. Three times during the course of each p…
Uncontrollability, depression, and the construction of mental models
Three studies examined mental model generation after preexposure to uncontrollability and in a depressive state. The purpose of the experiments was to test the implications of the cognitive exhaustion model, applying an explicit conceptualization of social mental models and a process-tracing method developed by U. von Hecker (1997). An experimental situation was created for observation of consecutive, rule-based construction steps as a function o…
Personal Control in Action
Effects of uncontrollability on subsequent decision making
The cognitive exhaustion model of helplessness--predicting withdrawal from constructive effortful processing after uncontrollability--was applied to decision making. After unsolvable problems (or no preexposure), Ss requested information from a matrix with 5 alternatives (films) x 10 attributes and then chose the best film. Films in a set were either similar (difficult decision) or dissimilar (easy decision) in attractiveness. As predicted, Ss wi…
When cognitive exertion does not yield cognitive gain
This study tested a new information-processing explanation of learned helplessness that proposes that an uncontrollable situation produces helplessness symptoms because it is a source of inconsistent, self-contradictory task information during problem-solving attempts. The flow of such information makes hypothesis-testing activity futile. Prolonged and inefficient activity of this kind leads in turn to the emergence of a state of cognitive exhaus…
Conspiracy Stereotypes of Jews During Systemic Transformation in Poland
The nature and functioning of the conspiracy theories of Jews in present-day Poland have been analyzed using a variety of methodological approaches (surveys, naturalistic experiments, cross-sectional studies). We examine (a) functional differences between conspiracy stereotypes and trait-laden stereotypes of Jews, (b) situational factors of the political milieu that modify accessibility of the conspiracy theories of Jews and their impact on attit…
When cognitive exertion does not yield cognitive gain
This study tested a new information-processing explanation of learned helplessness that proposes that an uncontrollable situation produces helplessness symptoms because it is a source of inconsistent, self-contradictory task information during problem-solving attempts. The flow of such information makes hypothesis-testing activity futile. Prolonged and inefficient activity of this kind leads in turn to the emergence of a state of cognitive exhaus…
Uncontrollability, depression, and the construction of mental models
Three studies examined mental model generation after preexposure to uncontrollability and in a depressive state. The purpose of the experiments was to test the implications of the cognitive exhaustion model, applying an explicit conceptualization of social mental models and a process-tracing method developed by U. von Hecker (1997). An experimental situation was created for observation of consecutive, rule-based construction steps as a function o…
Effects of uncontrollability on subsequent decision making
The cognitive exhaustion model of helplessness--predicting withdrawal from constructive effortful processing after uncontrollability--was applied to decision making. After unsolvable problems (or no preexposure), Ss requested information from a matrix with 5 alternatives (films) x 10 attributes and then chose the best film. Films in a set were either similar (difficult decision) or dissimilar (easy decision) in attractiveness. As predicted, Ss wi…
Stereotype threat as an antecedent to domain identification and achievement in language arts in boys
A substantial number of experimental studies on stereotype threat explores performance of girls in mathematics. Only few concentrated on gender differences favoring girls in language performance. However, gender differences in a reading test in the Program for International Student Assessment are three times larger than in mathematics. Considerable research indicates that gender differences in achievement and academic attitudes are partly explain…
Chronic stereotype threat and mathematical achievement in age cohorts of secondary school girls
A large body of experimental research on stereotype threat concentrated on immediate consequences of this effect. Far less attention has been given to the underlying mechanisms that may explain accumulative and long-term consequences of stereotype threat. To shed new light on the dynamic of stereotype threat, the current research examined the strength of associations between experience of stereotype threat, working memory, mathematical achievemen…
Individual differences in prejudice and associative versus rule-based forms of transitive reasoning
Two experiments examined whether individual differences in prejudice are associated with different reasoning styles when targets and nontargets of prejudice are processed in the same context. High-prejudice and low-prejudice participants studied pairwise relations between four persons (one a prejudice target, three nontargets). Stereotypes were made salient by using specific ethnic names and stereotypic traits to define relations between the targ…
When cognitive exertion does not yield cognitive gain
This study tested a new information-processing explanation of learned helplessness that proposes that an uncontrollable situation produces helplessness symptoms because it is a source of inconsistent, self-contradictory task information during problem-solving attempts. The flow of such information makes hypothesis-testing activity futile. Prolonged and inefficient activity of this kind leads in turn to the emergence of a state of cognitive exhaus…
Effects of uncontrollability on subsequent decision making
The cognitive exhaustion model of helplessness--predicting withdrawal from constructive effortful processing after uncontrollability--was applied to decision making. After unsolvable problems (or no preexposure), Ss requested information from a matrix with 5 alternatives (films) x 10 attributes and then chose the best film. Films in a set were either similar (difficult decision) or dissimilar (easy decision) in attractiveness. As predicted, Ss wi…
Personal Control in Action
Uncontrollability as irreducible uncertainty
This paper tests a prediction from the information-processing model of helplessness (Sedek & Kofta, 1990) that during exposure to uncontrollability people experience high levels of irreducible uncertainty. Participants were given either a solvable or unsolvable discrimination task consisting of five problems. After completion of each problem participants evaluated the probability of all solution hypotheses. Three times during the course of each p…
Uncontrollability, depression, and the construction of mental models
Three studies examined mental model generation after preexposure to uncontrollability and in a depressive state. The purpose of the experiments was to test the implications of the cognitive exhaustion model, applying an explicit conceptualization of social mental models and a process-tracing method developed by U. von Hecker (1997). An experimental situation was created for observation of consecutive, rule-based construction steps as a function o…
Conspiracy Stereotypes of Jews During Systemic Transformation in Poland
The nature and functioning of the conspiracy theories of Jews in present-day Poland have been analyzed using a variety of methodological approaches (surveys, naturalistic experiments, cross-sectional studies). We examine (a) functional differences between conspiracy stereotypes and trait-laden stereotypes of Jews, (b) situational factors of the political milieu that modify accessibility of the conspiracy theories of Jews and their impact on attit…
Individual differences in prejudice and associative versus rule-based forms of transitive reasoning
Two experiments examined whether individual differences in prejudice are associated with different reasoning styles when targets and nontargets of prejudice are processed in the same context. High-prejudice and low-prejudice participants studied pairwise relations between four persons (one a prejudice target, three nontargets). Stereotypes were made salient by using specific ethnic names and stereotypic traits to define relations between the targ…
The impact of background category information on the creation of social cliques
The impact of background category information on the creation of social cliques: The role of need for cognitive closure and decisiveness This article focuses on the role of need for cognitive closure in the process of mental model creation about social relations (i.e. social cliques). We assumed that high (vs. low) need for closure participants tend to rely on background category information when forming social cliques. We predicted that this ten…
Chronic stereotype threat and mathematical achievement in age cohorts of secondary school girls
A large body of experimental research on stereotype threat concentrated on immediate consequences of this effect. Far less attention has been given to the underlying mechanisms that may explain accumulative and long-term consequences of stereotype threat. To shed new light on the dynamic of stereotype threat, the current research examined the strength of associations between experience of stereotype threat, working memory, mathematical achievemen…
Stereotype threat is linked to language achievement and domain identification in young males
In the present paper, we investigated the link between stereotype threat, school achievement, and domain identification in language arts. We hypothesized that stereotype threat may lead to higher intellectual helplessness, lower working memory capacity, lower achievement, and domain identification but only in young men highly identified with their gender group. To test these assumptions we used self‐descriptive measures of stereotype threat, inte…
Stereotype threat as an antecedent to domain identification and achievement in language arts in boys
A substantial number of experimental studies on stereotype threat explores performance of girls in mathematics. Only few concentrated on gender differences favoring girls in language performance. However, gender differences in a reading test in the Program for International Student Assessment are three times larger than in mathematics. Considerable research indicates that gender differences in achievement and academic attitudes are partly explain…
Using stories to assess linear reasoning abolishes the age-related differences found in formal tests
Older adults are known to have difficulty with tests of formal reasoning. Inspired by previous work suggesting an influence of participants’ living ecology on reasoning ability, we examined in a group of 270 younger, middle-aged, and older adults whether presenting transitive reasoning problems (i.e., A > B, B > C, hence A > C) as informal narrative stories rather than formal problems might alleviate age-related declines. Formal materials resulte…
Foraging in multi-list recommender interfaces
The foraging paradigm can be applied in research on Multi-List Recommender Interfaces (MLRIs). • Older users find fewer products that match their preferences in MLRIs than younger ones. • The decreased performance of older users in MLRIs is mediated by their reduced exploration, that is inability to switch to new carousels at the right time. • A digital nudge that is activated when a user browses a carousel without interacting with the products o…
Effect of age on susceptibility to the attraction effect in sequential risky decision-making
Our study aims to contribute to the existing body of research on age-related changes in decision-making by investigating susceptibility to the attraction effect across adulthood. Prior studies have produced inconsistent conclusions regarding the decision-making abilities of older individuals, with some portraying them as easily manipulated and risk-averse, while others suggest the opposite. To address this issue, we conducted two experiments usin…
Psychology (14 works) · Social Psychology (13 works) · Cognition (9 works) · Developmental psychology (9 works) · Cognitive psychology (8 works) · Computer Science (6 works) · Learned helplessness (6 works) · Social Psychology (6 works) · Social and Intergroup Psychology (5 works) · Decision-Making and Behavioral Economics (4 works)