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Related Concept Videos

Self-Report Tests of Personality01:22

Self-Report Tests of Personality

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Self-report inventories are objective personality assessments that use multiple-choice items or numbered scales, typically ranging from 1 (strongly disagree) to 5 (strongly agree). They are often called Likert scales after Rensis Likert. These inventories are widely used due to their ease of administration and cost-effectiveness. One of the most prominent examples is the Minnesota Multiphasic Personality Inventory (MMPI), initially developed in the 1940s to assess abnormal personality traits.
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The Influence of Affect on Cognition01:29

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Positive affect significantly influences cognitive processes, including evaluation, memory, creativity, and social judgments. Compared to negative affect, positive emotional states promote more favorable interpretations of stimuli, cognitive flexibility, and heuristic processing. These effects highlight emotions' powerful role in shaping how individuals perceive, remember, and interact with the world.Influence on Evaluation and AttributionWhen individuals experience positive affect, they are...
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The Revised Mood Rhythm Instrument: A Large Multicultural Psychometric Study.

Melissa Alves Braga de Oliveira1,2, Euclides José de Mendonça Filho3, Alicia Carissimi1

  • 1Laboratório de Cronobiologia e Sono do Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre 90040-060, Rio Grande do Sul, Brazil.

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Summary

The revised Mood Rhythm Instrument (MRhI-r) effectively measures mood symptoms across cultures. This validated tool identifies daily mood patterns linked to psychiatric disorder risk, with sleepiness connecting cognitive, somatic, and affective domains.

Keywords:
circadian rhythmsdepressive symptomsmood disordersmood symptomsnetwork analysis

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Area of Science:

  • Psychiatry
  • Psychometrics
  • Cross-cultural research

Background:

  • Recurrent daily mood symptom peaks correlate with psychiatric disorder risk.
  • The Mood Rhythm Instrument (MRhI) assesses these mood patterns.
  • Cross-cultural validation of the MRhI is crucial for its global application.

Purpose of the Study:

  • To identify which MRhI items retain psychometric validity across diverse cultures (Brazil, Spain, Canada).
  • To refine the MRhI based on psychometric analyses.
  • To explore the association strength between MRhI items using network analysis.

Main Methods:

  • A large sample (n=1275) of adults aged 18-60 from Brazil, Spain, and Canada completed the MRhI and SRQ-20.
  • Psychometric analyses included factor analysis, item response theory, and network analysis.
  • Network analysis visualized inter-item associations, highlighting central nodes.

Main Results:

  • Factor analysis identified three domains: cognitive, somatic, and affective.
  • Item response theory guided the exclusion of culturally divergent items.
  • Network analysis revealed sleepiness as a central connecting factor across domains.
  • A refined 11-item version, the MRhI-r, was developed with good cross-cultural psychometric properties.

Conclusions:

  • The MRhI-r is a novel, psychometrically sound tool for assessing mood symptom rhythmicity.
  • It demonstrates good psychometric properties across multiple cultures.
  • This revised instrument aids in investigating mood-related symptoms and behaviors globally.