Sbm. Ewalds-kvist et al., Open-field Delta-ambulation as a selection tool for bidirectional responses in maze learning in Mus musculus L., PSYCHOBIOLO, 27(1), 1999, pp. 123-132
This paper presents the results of a bidirectional selective breeding exper
iment involving 1,287 mice. It was conducted by means of Delta-ambulation-t
hat is, by summing positive and negative learning-associated alterations in
open-field ambulation over a 5-day period of training. Delta-ambulation re
mained constant, but a selection response was found in maze running times a
nd error scores over generations and sexes in the two diverging, intralinea
rly homogenous, strains of mice.