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Developmental perspectives on personality: implications for ecological and evolutionary studies of individual
Judy A Stamps1, Ton G G Groothuis
1Evolution and Ecology, University of California, Davis, CA 95616, USA. jastamps@ucdavis.edu
Summary
Animal personality, characterized by behavioral consistency, can change due to developmental processes and early life experiences. Understanding developmental plasticity is key to studying animal personality evolution.
Area of Science:
- Behavioral Ecology
- Developmental Biology
- Animal Behavior
Background:
- Animal personality is defined by behavioral correlations across contexts (contextual generality) and time (temporal consistency).
- Personality is not fixed and can change throughout an animal's life, influenced by a wide range of prior experiences.
Purpose of the Study:
- To explore how developmental processes impact animal personality traits.
- To investigate the role of developmental reaction norms and plasticity in shaping personality.
- To examine how niche-related behaviors influence personality consistency.
Main Methods:
- Utilizing developmental reaction norms to model the effects of prior experience on behavior.
- Analyzing how early experiences influence later contextual generality of behavior.
- Incorporating niche-picking and niche-construction into developmental models.
Main Results:
- Developmental processes and prior experiences significantly influence behavioral generality and consistency.
- Individual variation in developmental plasticity leads to variation in personality across individuals.
- Niche-related behaviors can alter both contextual generality and temporal consistency of personality.
Conclusions:
- A developmental perspective is crucial for understanding the evolution and functional significance of animal personality.
- Behavioral ecologists must consider developmental processes and their impact on personality research.
- Future studies should integrate developmental plasticity and niche construction to better explain animal personality.
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