Validating the IDRIS and IDRIA: Two infrequency/frequency scales for detecting careless and insufficient effort survey responders.

To detect careless and insufficient effort (C/IE) survey responders, researchers can use infrequency items - items that almost no one agrees with (e.g., "When a friend greets me, I generally try to say nothing back") - and frequency items - items that almost everyone agrees with (e.

Moral Foundations Partially Explain the Associations of Machiavellianism, Grandiose Narcissism, and Psychopathy With Homonegativity and Transnegativity.

People with antagonistic (or "dark") personality traits (e.g., Machiavellianism, grandiose narcissism, and psychopathy) are reportedly more racist, sexist, and xenophobic than their non-antagonistic counterparts.

Antecedents and consequences of COVID-19 conspiracy beliefs: A systematic review.

Rationale: Belief in COVID-19 conspiracy theories can have severe consequences; it is therefore crucial to understand this phenomenon, in its similarities with general conspiracy belief, but also in how it is context-dependent.

Objective: The aim of this systematic review is to provide a comprehensive overview of the available research on COVID-19 conspiracy beliefs and to synthesise this research to make it widely accessible.

Methods: We present a synthesis of COVID-19 conspiracy belief research from 85 international articles, identified and appraised through a systematic review, in line with contemporary protocols and guidelines for systematic reviews.

Animal House: The Dark Tetrad traits and membership in sororities and fraternities.

Very little is known about the relationship between antagonistic personality traits and membership in Greek-letter organizations (GLOs). The present study (N = 2191) examined the association between the Dark Tetrad traits-Machiavellianism, grandiose narcissism, psychopathy, and everyday sadism-and membership in sororities and fraternities. Participants who were high in grandiose narcissism were more likely to be in sororities and fraternities, whereas participants who were high in Machiavellianism and everyday sadism were less likely to be in these organizations.