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. Author manuscript; available in PMC: 2011 Aug 1.
Published in final edited form as: J Am Acad Child Adolesc Psychiatry. 2010 May 5;49(8):783–793. doi: 10.1016/j.jaac.2010.01.026

Figure 2.

Figure 2

Results of a selection study of open-field activity. Note: Beginning with an F3 cross between two inbred strains of mice, two lines were selected for high open-field activity (H1 and H2) in which the most active (lease fearful) mice were selected and mated with other high-active mice. Similarly, two lines were selected for low open-field activity (L1 and L2), and two lines were randomly mated within each line to sever as controls (C1 and C2). (With kind permission from Springer Science+Business Media: Behavior Genetics, Response to 30 generations of selection for open-field activity in laboratory mice, volume 8, 1978, page 3–13, J. C. DeFries, M. C. Gervais, & E. A. Thomas, figure 2, ©1978 by Plenum Publishing Corporation. All rights reserved.)