complexity of tasks involving aversively motivated behaviors, elicitation of heterosis, inbred strains of mice &, their reciprocal F sub 1 hybrids
dx.doi.org/10.1037/h0077173
Journal of Comparative and Physiological Psychology
Carleton University

Anisman, H. (1975). Task complexity as a factor in eliciting heterosis in mice: Aversively motivated behaviors. Journal of Comparative and Physiological Psychology, 89(8), 976–984. doi:10.1037/h0077173