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Multiple indicators of side preference in the rat.

G Becker¹, K Schultz

¹Department of Psychology, University of Winnipeg, Manitoba, Canada.

Perceptual and Motor Skills

|June 1, 1990

Summary

Researchers found a general factor influencing rat side preference, but with correlated errors. Using multiple indicators is recommended to accurately measure this behavior and avoid measurement issues.

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Area of Science:

Behavioral Neuroscience
Animal Psychology
Psychometrics

Background:

Side preference in rats is a complex behavior.
Previous research has used various single measures to assess this preference.
The reliability and validity of single indicators may be compromised by error variance.

Purpose of the Study:

To test the hypothesis of a general factor underlying rat side preference.
To identify the structure of latent variables influencing behavioral indicators.
To provide recommendations for robust measurement of rat lateralization.

Main Methods:

Statistical analysis of intercorrelations among four prospective indicators of side preference.
Application of latent variable modeling to assess the proposed general factor.
Examination of correlated errors among measurement indicators.

Main Results:

Evidence supports a general factor influencing rat side preference.
The general factor accounts for intercorrelations among four specific indicators.
Correlated errors were identified among the prospective measures, indicating method variance.

Conclusions:

A general factor, alongside correlated errors, best explains rat side preference.
Using multiple indicators is crucial for accurate construct representation.
Avoid single-indicator measures to mitigate method and error variance in behavioral research.

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