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Related Experiment Video

Updated: Jun 12, 2026

Three Laboratory Procedures for Assessing Different Manifestations of Impulsivity in Rats

Three Laboratory Procedures for Assessing Different Manifestations of Impulsivity in Rats

Published on: March 17, 2019

Relationship between circadian typology and functional and dysfunctional impulsivity.

Ana Adan¹, Vincenzo Natale, Hervé Caci

¹Department of Psychiatry and Clinical Psychobiology, School of Psychology, University of Barcelona, Barcelona, Spain. aadan@ub.edu

Chronobiology International

|June 8, 2010

Summary

Men exhibit higher impulsivity, particularly dysfunctional impulsivity, across various chronotypes. Morning-type individuals, especially men, show better impulse control, suggesting a protective effect for morningness.

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Last Updated: Jun 12, 2026

Three Laboratory Procedures for Assessing Different Manifestations of Impulsivity in Rats

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Published on: March 17, 2019

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Published on: August 8, 2019

Area of Science:

Psychology
Chronobiology
Behavioral Science

Background:

Impulsivity is a complex trait with functional and dysfunctional dimensions.
Circadian typology (morningness-eveningness) influences various behaviors and cognitive functions.
Sex differences in impulsivity and chronotype have been observed but require further investigation.

Purpose of the Study:

To investigate the interplay between functional and dysfunctional impulsivity, circadian typology, and sex.
To examine sex differences in impulsivity across different chronotypes.
To identify potential protective factors for impulse control.

Main Methods:

Utilized factorial analysis on data from 850 university students (396 men).
Administered the Dickman's Impulsivity Inventory (DII) and the reduced morningness-eveningness questionnaire (rMEQ).
Analyzed relationships between impulsivity dimensions, chronotype, and sex.

Main Results:

Men scored higher than women on both functional and dysfunctional impulsivity.
Morning-type individuals had lower dysfunctional impulsivity scores compared to neither- and evening-types.
An interaction effect revealed higher dysfunctional impulsivity in men of neither- and evening-types, but not morning-types.

Conclusions:

Morning-type chronotype may act as a protective factor against impulse control issues, particularly in men.
Results highlight the complex interaction between sex, chronotype, and impulsivity.
Further research is warranted to explore clinical and neurobiological implications.