TY  - JOUR
A1  - Malesza, Marta
T1  - Grandiose narcissism and vulnerable narcissism in prisoner's dilemma game
JF  - Personality and individual differences
N2  - The aim of this article is to investigate the role of the grandiose and vulnerable narcissism in the economic game. One widely employed paradigm in this field of experimental economic games is the prisoner's dilemma-used to examine competitive versus cooperative behaviour. In the present study a prisoner's dilemma game was administrated to individuals (N = 320), along with measures of grandiose narcissism, vulnerable narcissism and impulsivity. Specifically, our results show that vulnerable narcissism has a significant positive effect on defecting behaviors, while grandiose narcissism has a significant positive effect on cooperation in the initial round. However, while the game proceeded, grandiose narcissism started to have a positive effect on defecting behaviors too. This suggests that grandiose narcissists have, at least initially, positive qualities to them which can make them popular, but in the long run they lose their positive reputation and their likeability and willingness to cooperate decrease.
KW  - grandiose narcissism
KW  - vulnerable narcissism
KW  - prisoner's dilemma game
KW  - experimental economics
KW  - impulsivity
Y1  - 2020
U6  - https://doi.org/10.1016/j.paid.2020.109841
SN  - 0191-8869
SN  - 1873-3549
VL  - 158
PB  - Pergamon Press; Elsevier Science
CY  - Oxford, Amsterdam
ER  - 
TY  - JOUR
A1  - de Vries, Sarah-Kristin
A1  - Meule, Adrian
T1  - Food Addiction and Bulimia Nervosa: New Data Based on the Yale Food Addiction Scale 2.0
JF  - European eating disorders review : the professional journal of the Eating Disorders Associatio
KW  - food addiction
KW  - Yale Food Addiction Scale
KW  - bulimia nervosa
KW  - Eating Disorder Diagnostic Scale
KW  - impulsivity
Y1  - 2016
U6  - https://doi.org/10.1002/erv.2470
SN  - 1072-4133
SN  - 1099-0968
VL  - 24
SP  - 518
EP  - 522
PB  - Wiley-Blackwell
CY  - Hoboken
ER  - 
TY  - JOUR
A1  - Malesza, Marta
A1  - Ostaszewski, Paweł
T1  - Assessing individual differences in discounting
BT  - construction and initial validation of the discounting inventory
JF  - Current psychology
N2  - The purpose of the project was to develop the Discounting Inventory (DI), a measure of individual differences in delay, probability, effort, and social discounting, all related to behavioral impulsivity. Over 400 items relating to four types of discounting were generated. Next, a study followed by a series of psychometric analyses of data obtained from a group of 2843 individuals was conducted. Principal Component Analysis yielded a four-factor structure of data, reflecting the four types of discounting. The results of Confirmatory Factor Analysis showed good fit of the four-factor model to data. Through several iterations of retaining and deleting items on the basis of their component loadings, item intercorrelations, and contribution to coefficient alphas, the total number of items was reduced to 48. The final 48-item version of the inventory has satisfactory psychometric characteristics, including Cronbach's alpha and test-retest stability. In addition, significant correlations were observed between the DI and traditional discounting instruments, suggesting that the DI measures a construct similar to the behavioral discounting process. The development of the tool was based on the assumption that discounting is a personality trait. However, the present data suggest that discounting may reflect more a state than trait function.
KW  - scale construction
KW  - personality trait
KW  - impulsivity
KW  - discounting
Y1  - 2017
U6  - https://doi.org/10.1007/s12144-017-9754-x
SN  - 1046-1310
SN  - 1936-4733
VL  - 39
IS  - 1
SP  - 207
EP  - 219
PB  - Springer
CY  - New York
ER  -