Article Figures & Data
Tables
Scale Time 1 Time 2 Differences Reliability M SD M SD |M Diff.| F d SEM-1 SEM-2 RS* 0.75 1.28 0.56 0.96 0.19 0.75 0.17 0.18 0.13 SC* 0.77 1.44 0.77 1.50 0.00 0.00 0.00 0.20 0.21 IA* 0.13 0.49 0.31 0.78 −0.18 1.84 0.27 0.07 0.11 BL† 0.94 1.64 0.62 1.39 0.32 1.21 0.21 0.23 0.19 SU† 4.46 4.79 4.15 5.48 0.31 0.09 0.06 0.66 0.76 SEL† 4.54 4.29 3.85 4.54 0.69 0.64 0.16 0.60 0.63 SEV† 0.87 1.90 0.92 2.09 −0.05 0.02 0.03 0.26 0.29 RO* 0.17 0.51 0.04 0.28 −0.13 2.77 0.32 0.07 0.38 Munlikely 0.46 0.93 0.42 0.88 0.04 1.34 0.19 0.13 0.21 Mamplified 2.70 3.16 2.39 3.38 0.31 0.49 0.12 0.44 0.47 |M diff.|, the absolute mean difference; SEM-1, SEM for Time 1; SEM-2, SEM for Time 2; RS, rare symptoms; SC, symptom combinations; IA, improbable and absurd symptoms; BL, blatant symptoms; SU, subtle symptoms; SEL, selectivity of symptoms; SEV, severity of symptoms; RO, reported vs. observed symptoms. All F ratios are nonsignificant.
* Scale uses an unlikely detection strategy.
† Scale uses an amplified detection strategy.
Test-Retest Reliability and Consistency Scales Classification Correlation % ± |2| Concordance (%) κ Yule's Q RS 0.36* 92.3 98.1 0.66† 1.00 SC 0.70† 96.2 100.0 1.00† 1.00 IA 0.46† 98.1 100.0 1.00† 1.00 BL 0.54† 88.5 100.0 1.00† 1.00 SU 0.90† 75.0 94.2 0.38† 1.00 SEL 0.88† 78.6 98.1 0.66† 1.00 SEV 0.84† 92.3 98.1 0.66† 1.00 RO −0.04 98.1 100.0 1.00† 1.00 Munlikely 0.38 96.2 99.5 .92 1.00 Mamplified 0.79 83.6 97.6 .68 1.00 Classifications are nonfeigning (honest and indeterminate) and feigning (probable and definite); % ± |2| is the percentage for which absolute difference in repeated administrations is 2 points or less.
* p ≤ 0.05
† p ≤ 0.001.