For instance, Pinker discusses studies of girls with congenital adrenal hyperplasia, a genetic disorder that leads girls to overproduce testosterone and other male sex hormones. These girls may perform better on average than their female peers on some spatial tests. But in his debate with Spelke, Steven Pinker conceded that research on CAH girls' spatial ability "is inconclusive." He continued, "I cannot honestly say that there are replicable demonstrations that CAH women have male-typical patterns of spatial cognition."