Table 1.

Average trial omissions in set-shifting task

	Visual Cue Discrimination	Position Discrimination	Position Reversal
Males
0 mg/kg/day	0.143±0.097	0.143±0.143	0.071±0.071
3 mg/kg/day	0.167±0.103	0.083±0.077	0.000±0.000
6 mg/kg/day	*1.083±0.399	0.167±0.142	0.000±0.000
Females
0 mg/kg/day	0.429±0.291	0.214±0.114	0.071±0.071
3 mg/kg/day	0.333±0.142	0.250±0.179	0.417±0.229
6 mg/kg/day	0.000±0.000	0.000±0.000	0.538±0.291

Effects of PCB exposure on trial omissions in the set-shifting task. There was a significant difference in omissions in males during visual cue discrimination (p=0.016) with males of the 6 mg/kg group having significantly more omissions than males of the 0 mg/kg (p=0.027) and 3 mg/kg (p=0.036) groups. Females did not differ significantly in trial omissions across any of the phases of the set-shifting task. Results are reported as mean ± SEM for all measures.

“*” denotes statistical significance (p<0.05)