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. Author manuscript; available in PMC: 2013 Oct 10.
Published in final edited form as: Personal Disord. 2011 Nov 7;3(2):107–126. doi: 10.1037/a0025905

Table 2.

Concurrent GRM and 2PLM Item Parameter Estimates and SEs for the 19-Item Constraint Scale From the NEO, SNAP, and TCI

Item Original scale Stem a b1 b2 b3 b4
T103 Persistence I usually push myself harder than most… 1.99 (0.22) −0.58 (0.08)
N130 Conscientiousness I never seem to be able to get organized (R) 1.96 (0.16) −1.71 (0.14) −0.67 (0.08) −0.16 (0.07) 0.89 (0.10)
S29 Workaholism When I start a task, I am determined to finish… 1.94 (0.23) −0.96 (0.10)
N40 Conscientiousness I keep my belongings neat and clean 1.90 (0.15) −2.17 (0.19) −0.80 (0.09) −0.16 (0.08) 0.97 (0.10)
S89 Impulsivity I tend to value and follow a rational, … 1.85 (0.26) −1.36 (0.13)
T148 Novelty seeking I like to pay close attention to details in… 1.73 (0.22) −0.47 (0.09)
N100 Conscientiousness I like to keep everything in its place so I… 1.60 (0.14) −2.30 (0.22) −0.98 (0.11) −0.15 (0.08) 1.16 (0.12)
S214 Workaholism I enjoy working hard 1.57 (0.20) −1.28 (0.13)
N25 Conscientiousness I’m pretty good about pacing myself so as to… 1.55 (0.13) −2.21 (0.20) −0.83 (0.11) −0.27 (0.09) 1.43 (0.14)
S173 Disinhibition I usually use careful reasoning when… 1.50 (0.20) −1.08 (0.13)
S154 Disinhibition I always try to be fully prepared before I… 1.45 (0.18) −1.04 (0.13)
T62 Persistence I am more hard-working than most people 1.37 (0.20) −0.36 (0.10)
S261 Disinhibition I work just hard enough to get by (R) 1.34 (0.16) −0.72 (0.12)
S202 Propriety When I’m working on something, I’m not… 1.22 (0.33) −1.05 (0.16)
N210 Conscientiousness I plan ahead carefully when I go on a trip 1.22 (0.14) −2.81 (0.37) −1.37 (0.19) −0.49 (0.13) 1.11 (0.17)
N205 Conscientiousness There are so many little jobs that need… (R) 1.22 (0.15) −2.63 (0.37) −1.10 (0.18) −0.28 (0.14) 1.45 (0.21)
T166 Persistence I often give up a job if it takes much… (R) 1.21 (0.21) −1.64 (0.24)
S254 Disinhibition Before making a decision, I carefully… 1.10 (0.17) −1.13 (0.17)
N230 Conscientiousness I’m something of a “workaholic” 1.09 (0.13) −1.79 (0.26) −0.05 (0.14) 0.90 (0.16) 2.49 (0.32)

Note. Letters before the item number indicate the measure to which the item originated (N = NEO-PI-R, S = SNAP-2, and T = TCI). Some items had to be shortened (…) because of space limitations. “R” indicates the item was reverse scored. The “a” parameter represents slope and “b” parameter(s) represents location.