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Table 2 Pre and post intervention differences

From: Positive Emotions Program for Schizophrenia (PEPS): a pilot intervention to reduce anhedonia and apathy

  Pre-test
Mean
(sd)
Post-test
Mean
(sd)
t (df); p Cohen s’d
SANS scale scores  
Affective flattening or blunting 9.74 (7.43) 9.45 (5.93) t = .24 (30); p = .82 0.04
Alogia 4.58 (2.87) 4.35 (2.22) t = .59 (30); p = .56 0.08
Avolition – Apathy* 6.29 (3.82) 4.29 (2.76) t = 3.84 (30); p = .001 0.57
Anhedonia – Asociality* 11.10 (3.90) 9.26 (3.26) t = 3.81 (30); p = .001 0.50
Attention 3.42 (2.38) 2.87 (2.73) t = 1.10 (30); p = .28 0.21
SANS-total score 35.13 (13.70) 30.23 (12.25) t = 2.48 (30); p = .02 0.38
CDSS total score* 8.39 (4.58) 4.55 (3.72) t = 4.61 (30); p = .000 0.91
Savoring Belief Inventory total score 4.52 (7.81) 7.81 (8.67) t = −2.26 (30); p = .03 0.34
  1. *p < .005, Boneferroni correction for multiple tests (8 comparisons)