The MACH–IV was investigated (N = 528) with item response theory to elucidate its psychometric properties and suggest a trimmed version, the MACH*. The core content of the MACH–IV seemed to be cynicism/misanthropy and the MACH* was formed from the 5 most informative and precise MACH–IV items. The MACH* showed good internal consistency and construct and criterion validity comparable to the MACH–IV. The MACH–IV and MACH* measure most precisely at average to above average levels of Machiavellianism. Implications for theory and measurement of Machiavellianism are discussed.

People perceive psychological situations on the “Situational Eight” DIAMONDS characteristics (Duty, Intellect, Adversity, Mating, pOsitivity, Negativity, Deception, Sociality; Rauthmann et al., 2014 ). To facilitate situational assessment and economically measure these dimensions, we propose four ultra-brief one-item scales (S8-I, S8-II, S8-III-A, S8-III-P) validated against the already existing 24-item S8*. Convergent/discriminant validity of the four S8-scales was examined by analyses of the multi-characteristics multi-measures matrix, and their nomological associations with external criteria were compared. Application areas of the scales are discussed.

Personality psychology has long focused on structural trait models, but it can also offer a rich understanding of the dynamics, processes, mechanisms, and functioning of individual differences or entire persons. The field of personality dynamics, which works towards such an understanding, has experienced a renaissance in the last two decades. This review article seeks to act as a primer of that field. It covers its historical roots, summarizes current research strands – along with their theoretical backbones and methodologies – in an accessible way, and sketches some considerations for the future. In doing so, we introduce relevant concepts, give an overview of different topics and phenomena subsumed under the broad umbrella term ‘dynamics’, and highlight the interdisciplinarity as well as applied relevance of the field. We hope this article can serve as a useful overview for scholars within and outside of personality psychology who are interested in the dynamic nature of human behaviour and experience.

Convergent correlations between traits and state aggregates from experience sampling cannot fully establish trait-state homomorphy (the extent to which the same constructs are measured). With a nomological vector correlation and lens model approach, we test how similar nomological networks of traits and state aggregates are to each other: A trait and state-aggregate capture the same construct when both show highly similar nomological associations to a common set of correlates. In large experience sampling (N = 209) and life-logging studies (N = 298), Extraversion, Conscientiousness, and Agreeableness tended to show more and Openness, Honesty/Humility, and Neuroticism/Emotionality tended to show less trait-state homomorphy. However, these general findings differed somewhat at the aspect level, with Neuroticism and Extraversion aspects tending to show more versus Openness and Honesty/Humility aspects tending to show less homomorphy. The proposed nomological approaches can be flexibly applied to other traits, states, and correlates.

Over the past 15 years, research on the assessment of psychological situations has flourished. As a result, many basic questions about psychological situations have been answered. We discuss the theoretical and empirical studies that answered these questions, including what situations are; how they can be characterized, taxonomized, and measured; how they relate to person variables; and how persons navigate situations. We first summarize the “knowns” of psychological situation research and then proceed to chart the “unknowns” that have yet to be examined. We conclude with an agenda for future situation research.

Contingencies between situational variables and psychological states have been proposed as key individual difference variables by many theoretical approaches to personality. Despite their relevance, the basic properties, nomological correlates, and factor structure of individual differences in contingencies have not been examined so far. We address these fundamental questions in five studies with overall N = 952 participants and N = 32,052 unique assessments. Individual differences in situation characteristic-state contingencies (SCSCs) between DIAMONDS situation characteristics and Big Five personality states were examined in everyday life. SCSCs showed substantial variation across participants, and individual differences in them were moderately reliable (average meta-analytic reliability = .47) and short-term stable (average meta-analytic latent stability = .43). They were weakly and inconsistently related to average personality states, self-reported personality traits, subjective happiness, and sociodemographic variables across studies. However, there were meaningful intercorrelations among SCSCs that could be described by four factors: contingencies involving (1) positive states and situational problems, (2) positive states and situational rewards, (3) thinking/work and requirements of thinking/work, and (4) neurotic states. Overall, our findings support the notion of SCSCs as potentially important individual difference variables, and we sketch future lines of research on contingencies. (PsycInfo Database Record (c) 2022 APA, all rights reserved).