Table 2. Principal component factor analysis of general learning scores and exploratory and sensory/motor measures.

An unrotated principal component factor analysis of exploratory, sensorimotor, and general learning abilities revealed only a primary factor explaining 25% of the total variance.

	Factor 1
Open field: total entries	0.68
Open field: % internal entries	0.46
Open field: run speed	−0.62
Light/Dark discrimination: time in dark	−0.24
Light/Dark discrimination: latency to enter light	−0.46
Balance beam: latency to fall	−0.13
Balance beam: distance travelled	0.16
Screen Hang: latency to fall	−0.06
Screen Hang: # of crossings	−0.11
Balance Pole: latency to fall	0.26
Hotplate	0.10
EPM: closed entries	0.79
EPM: open entries	0.84
EPM: reentries	0.10
EPM: total entries	0.89
EPM: % open entries	0.82
G Factor 1	−0.29
G Factor 2	−0.27
eiganvalue	4.42
% Variance Explained	25%