a trend toward significancep = 0.055
This effect reached significance by session 6 ( p < 0.05 as compared to Saline-Yoked) and by the final FR1 session, female offspring of Oxycodone-Yoked dams had higher active lever pressing compared to Saline-Yoked offspring ( p < 0.001), and there was a trend toward significance when compared to Oxycodone-Lead female offspring ( p = 0.055).