TABLE 4.

Differentiating severe procrastination from less severe procrastination.

		Less severe procrastination			Severe procrastination
		N	M	SD	N	M	SD	t	df	p	d
Pure Procrastination Scale	PPS	344	2.20	0.53	388	3.71	0.50	39.43	730	0.00*	2.92
	PDC	398	2.46	0.75	334	3.65	0.62	23.58	729.93	0.00*	1.72
Susceptibility to Temptation Scale	PPS	344	2.60	0.81	388	3.64	0.73	18.20	695.24	0.00*	1.36
	PDC	398	2.70	0.85	334	3.68	0.72	16.97	729.95	0.00*	1.24
Clinical Perfectionism Questionnaire (Personal Standards)	PPS	344	2.73	0.63	388	2.60	0.62	2.71	730	0.01	0.20
	PDC	398	2.70	0.61	334	2.61	0.65	1.98	730	0.05	0.15
Clinical Perfectionism (Emotional Concerns)	PPS	344	2.64	0.74	388	3.19	0.68	10.49	730	0.00*	0.78
	PDC	398	2.65	0.75	334	3.26	0.62	12.05	729.99	0.00*	0.88
Generalized Anxiety Disorder Questionnaire	PPS	344	6.08	4.96	388	9.42	5.66	8.53	729.90	0.00*	0.63
	PDC	398	6.17	4.92	334	9.85	5.69	9.25	662.48	0.00*	0.70
Patient Health Questionnaire	PPS	344	6.33	5.36	388	11.28	6.24	11.53	729.28	0.00*	0.85
	PDC	398	6.65	5.52	334	11.70	6.15	11.59	676.20	0.00*	0.87
Perceived Stress Scale	PPS	344	2.59	0.58	388	3.19	0.57	–14.28	730	0.00*	1.06
	PDC	398	2.65	0.59	334	3.22	0.58	–13.08	730	0.00*	0.97
Brunnsviken Brief Quality of Life Scale: Leisure	PPS	344	8.74	4.72	388	7.10	4.75	4.68	730	0.00*	0.35
	PDC	398	8.71	4.60	334	6.87	4.86	5.25	730	0.00*	0.39
Brunnsviken Brief Quality of Life Scale: View of Life	PPS	344	10.78	4.80	388	8.72	5.23	5.52	730	0.00*	0.41
	PDC	398	10.59	4.80	334	8.61	5.33	5.23	677.10	0.00*	0.39
Brunnsviken Brief Quality of Life Scale: Creativity	PPS	344	7.49	4.96	388	6.24	5.19	3.32	730	0.00*	0.25
	PDC	398	10.59	4.80	334	8.61	5.33	5.23	677.10	0.00*	0.39
Brunnsviken Brief Quality of Life Scale: Learning	PPS	344	10.83	4.64	388	8.53	5.11	6.35	7300	0.00*	0.47
	PDC	398	7.47	4.87	334	6.07	5.31	3.74	730	0.00*	0.28
Brunnsviken Brief Quality of Life Scale: Friends	PPS	344	10.69	5.07	388	8.93	5.41	4.52	730	0.00*	0.45
	PDC	398	10.56	5.06	334	8.81	5.47	4.49	730	0.00*	0.33
Brunnsviken Brief Quality of Life Scale: Self	PPS	344	10.29	4.71	388	7.29	4.90	8.42	730	0.00*	0.62
	PDC	398	9.96	4.70	334	7.20	5.02	7.65	730	0.00*	0.57
Brunnsviken Brief Quality of Life Scale: Total	PPS	344	58.83	19.83	388	46.82	20.81	7.97	730	0.00*	0.59
	PDC	398	58.11	19.09	334	45.74	21.66	8.12	669.99	0.00*	0.61

*p < 0.002 (Bonferroni correction).