It should be noted that data from the nonclinical controls and
participants with schizophrenia spectrum illnesses were drawn from a larger
study (Pinkham & Penn, 2006). The current article differs from Pinkham
and Penn in the following ways: (1) the primary purpose of Pinkham and
Penn was to examine the functional significance of social cognition in
schizophrenia, which is a different research question from that examined in
the current study; (2) the current study has included a sample with
prodromal symptoms; (3) the current article has divided the clinical sample
into early and more chronic subsamples, whereas Pinkham and Penn
collapsed across illness chronicity; (4) the current article has included only
a subsample of nonclinical controls (N21, vs. N49 in Pinkham & Penn);
and (5) the social skill variables were coded differently in the current study
compared to Pinkham and Penn.