Sleuth2 (version 1.0-3)

case1601: Sites of Short- and Long-Term Memory

Description

Researchers taught 18 monkeys to distinguish each of 100 pairs of objects, 20 pairs each at 16, 12, 8, 4, and 2 weeks prior to a treatment. After this training, they blocked access to the hippocampal formation in 11 of the monkeys. All monkeys were then tested on their ability to distinguish the objects. The five-dimensional response for each monkey is the number of correct objects distinguished among those taught at 16, 12, 8, 4, and 2 weeks prior to treatment.

Usage

case1601

source

Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.

References

Sola-Morgan, S. M. and Squire, L. R. (1990). The Primate Hippocampal Formation: Evidence for a Time-limited Role in Memory Storage, Science 250: 288--290.

Examples

str(case1601)

# short-term response
short <- with(case1601, (Week2 + Week4)/2)
# long-term response
long <- with(case1601, (Week8 + Week12 + Week16)/3)
# Multivariate analysis of variance
mfit <- manova(cbind(short,long) ~ Treatment, case1601) 
summary(mfit)