Title

Intertrial Interval Manipulations and Passive Avoidance Retention in Young Long-Evans Hooded Rats

Publication Title

Developmental Psychobiology

Publication Date

12-2002

Document Type

Article

DOI

10.1002/dev.10068

Keywords

young rats, passive avoidance, intertrial interval, learning, retention, infantile amnesia

Disciplines

Psychology

Abstract

Results of several studies indicate that young rats generally require more training than do adults to reach comparable criterion levels of passive avoidance behavior. In addition, younger rats generally show poorer retention performance than adults. In the present study, preweanling and weanling Long-Evans rats were given passive avoidance training at intertrial intervals (ITI) of 2 min, 1 hr, or 24 hr until a 600-s criterion was obtained. A 2-week retention test also was given to each subject. Results indicate that ITI had little effect on rate of acquisition or retention. Acquisition and retention performance did improve with age, as is typically reported with other strains of rats. The present results support previous acquisition and retention studies indicating that the ability to acquire and retain a passive avoidance task for weanling and preweanling rats increases with age


Share

COinS