Table 11.

Resistance to change in behaviour, in postnatally MDMA-treated subjects, compared with placebo-treated subjects.

Study	Recruitment	Population Sampled	No. Participants	Sexes	Ages	Oral MDMA Dose	Dosage Timing	Time till First Test	Relevant Tests	Relevant Results	Relevant Parameters Tested
van Wel 2012 [127]	Newspaper adverts, word of mouth	Healthy, MDMA-experienced	17	8 female, 9 male	22.76	75 mg (~1.1 mg/kg)	7/+ days apart	105 mins.	Reversal learning	No effect	Response to changing rules of shapes presented
Vollenweider 2005 [123]	University hospital staff, medical school	Healthy, mostly MDMA-naïve	42	10 female, 32 male	25.4-27	1.5 mg/kg	Singular	120 mins.	Decision-making rigidity	Increased likelihood of previous response predicting current response; fewer different strategies used, but frequency of switching unchanged	Degree to which previous response determines next response; changing of choice strategies, and the frequency of this change