In order to apply for the Full Membership the cut-off is to score at or above the
99.98th percentile (153 s.d.=15),
while the Prospective Membership requires to score at or above the
98.6th percentile (133 s.d.=15).
Since the end of February 2020, sPIqr applications are suspended due to lack of activity in the group and reduced personal motivation in discussing high IQ related topics).