Table 3.

Correlations of hypomanic symptoms and narcissistic traits with items from the BIS-11 and the SCS

	HPS	NPI
A. BIS-11 (all items coded such that higher scores = more impulsivity)
Block 1A
8. I am self-controlled (R)	.27**	.03
9. I concentrate easily (R)	.29**	−.02
10. I save regularly (R)	.20**	.05
11. I “squirm” at plays or lectures	.18**	.03
12. I am a careful thinker (R)	.20**	−.04
18. I get easily bored when solving thought problems	.21**	.05
21. I am a steady thinker (R)	.26**	−.02
30. I often think about extraneous thoughts when thinking	.32**	.09
31. I am more interested in the present than the future	.15*	−.06
Block 2A
13. I plan for job security (R)	.10	−.10
19. I have regular health check ups (R)	.06	−.12
Block 3A
1. I plan tasks easily. (R)	.08	−.18**
7. I plan trips well ahead of time (R)	.06	−.13*
34. I am future oriented (R)	.04	−.17*
Block 4A
2. I do things without thinking	.42**	.29**
5. I don’t “pay attention”	.30**	.14*
6. I have “racing” thoughts	.46**	.14*
14. I say things without thinking	.39**	.19**
17. I act “on impulse”	.50**	.35**
20. I act on the spur of the moment	.50**	.33**
B. SCS (all items coded such that higher scores = more self-control)
Block 1B
1. I am good at resisting temptation	−.20**	−.04
3. I am lazy	−.27**	−.06
10. I have trouble concentrating	−.38**	−.11
12. Sometimes I can’t stop myself from doing something, even if I know it is wrong	−.32**	−.12
Block 2B
2. I have a hard time breaking bad habits	−.15*	.13*
Block 3B
7. I wish I had more self-discipline	−.11	.17*
8. People would say that I have iron self- discipline	−.09	.14*

Items are listed in blocks. Block 1, correlations for HPS exceed those for NPI; block 2: correlations in opposite directions; block 3: correlations for NPI exceed those for HPS; block 4: significant positive correlations for both NPI and HPS.

BIS-11, Barratt Impulsiveness Scale; SCS, Self-Control Scale.

^*p < .05

^**p < .01.

Correlations that differ by approximately .13 are significantly different from one another.