Self-control in crows, parrots and nonhuman primates

Area of Science:

• Comparative Psychology
• Cognitive Biology
• Animal Cognition

Background:

• Self-control is fundamental for goal-directed behavior, decision-making, and future planning in humans and animals.
• It correlates positively with social competence and life success in humans.
• Delay of gratification is a key measure of self-control.

Purpose of the Study:

• To present the first review of delay of gratification as a measure of self-control in nonhuman primates, corvids, and psittacines.
• To compare performance in delay of gratification tasks across these cognitively advanced species.
• To identify key issues and future research directions for understanding self-control and complex cognition in animals.

Main Methods:

• Literature review focusing on studies measuring delay of gratification in nonhuman primates, corvids, and psittacines.
• Comparative analysis of performance across these disparate but cognitively similar animal groups.
• Identification of commonalities, differences, and research gaps in the study of self-control.

Main Results:

• Delay of gratification is a viable measure of self-control across diverse animal groups with advanced cognitive abilities.
• Species such as primates, corvids, and psittacines exhibit comparable cognitive skills relevant to self-control.
• Significant variation exists in performance and the factors influencing delayed gratification.

Conclusions:

• This review advances the understanding of delayed gratification as a measure of self-control in comparative psychology.
• It highlights the evolutionary roots of cognition and complex cognitive abilities across different animal taxa.
• Further research is needed to refine measures and identify drivers of delayed gratification for a comprehensive understanding of animal self-control.