The effects of fantastical pretend-play on the development of executive functions: An intervention study.

Although recent correlational studies have found a relationship between fantasy orientation (FO; i.e., a child's propensity to play in a fantastical realm) and higher order cognitive skills called executive functions (EFs), no work has addressed the causality and directionality of this relationship.

Acute withdrawal but not long-term withdrawal from methamphetamine affects sexual behavior in female rats.

The present study was designed to investigate the long-term effects of repeated methamphetamine (MA) exposure on sexual motivation in female rats tested after a period of drug abstinence. In Experiment 1, female subjects received three injections of MA (1.0mg/kg/day, every other day) or saline and were tested for paced mating behavior (where females could control the receipt of sexual stimulation from one male rat) 21 days after their last injection.