Group Means (SD) of Demographic and clinical data, Neuropsychological test scores, and Median Target Reaction Times.

Note: all tests corrected for heteroscedacity; HC, healthy controls; ROP, Recent Onset Psychosis patients; NROP, ROP no schizophrenia; SROP, ROP with schizophrenia; Ns, p>.05; IQ, Intelligence Quotient; PANSS Pos, PANSS Positive scale; PANSS Neg, PANSS Negative scale; PANSS Gen, PANSS General scale; Dis-P2, score on PANSS P2 item Conceptual Disorganization; Dis-CogSyn, Disorganization score on Cognitive Syndrome factor; Dis-5Fact, Disorganization factor score; AP, Antipsychotic; CPZ eq dose/d, Chlorpromazine equivalent dose per day; Str, Stroop test; Trl, Trailmaking test; CVLT, California Verbal Learning Test; CPT d', Continuous Performance Test d-prime; FingerTp, Fingertapping test; RT, Reaction Time; W-Obj, within-object; B-Obj, between-object; BORT – WORT, between-object RT minus within-object RT;