Table 2 : Mean (M), Standard Deviations (SD), F-Statistics with p-Values and
Effect Sizes (Cohen's d) for Inventories of Time Perspective, Prospective Time
Production, Retrospective Time Estimation and BDI score.


                      Group      
  Anxiety Control F p Cohen's d
M (SD) M (SD)
S-ZTPI          

Past Negative 3.53 (0.71) 2.77 (0.55) 15.70 0.00 1.23
Past Positive 3.26 (0.70) 3.55 (0.78) 1.60 0.21 0.39
Present Fatalistic 2.67 (0.42) 2.52 (0.39) 1.64 0.21 0.40
Present Hedonistic 3.18 (0.54) 3.28 (0.58) 0.35 0.56 0.18
Future Negative 3.33 (0.68) 2.69 (0.56) 11.70 0.00 1.07
Future Positive 3.44 (0.70) 3.36 (0.65) 0.17 0.68 0.13
BDI score 16.11 (6.59) 6.88 (5.63) 25.01 0.00 1.56

Prospective time production

2 minutes 1.02 (0.33) 0.91 (0.28) 1.35 0.25 0.36

Retrospective time estimation

12 minutes 1.02 (0.27) 0.91 (0.29) 1.66 0.21 0.40

Åström et al.Journal of Integrative Psychology and Therapeutics  2014 2:3DOI : 10.7243/2054-4723-2-3