Table 3. Inter-rater Reliability and Descriptive Statistics for Violence Motivation.
| Rating | Intraclass Correlation Coefficient (ICC) |
Mean | SD | Skew | Kurtosis |
|---|---|---|---|---|---|
| Total Instrumentality (AICS) | .81 | 1.84 | .82 | .84 | -.08 |
| AICS Scales | |||||
| Planning | .80 | 1.28 | .44 | 2.30 | 5.91 |
| Goal-directedness | .75 | 1.83 | .82 | .78 | -.21 |
| Arousal | .73 | 2.51 | .53 | -.48 | -.35 |
| Provocation | .78 | 2.76 | .78 | .58 | .78 |
| Severity of violence | .85 | 3.06 | .63 | -.06 | .50 |
| Relationship with victim | .93 | 2.47 | .96 | .45 | -.31 |
| Intoxication | .96 | 1.72 | .68 | .51 | -1.04 |
|
| |||||
| Specific Goals | |||||
| Power | .74 | 1.31 | .56 | 1.95 | 3.56 |
| Respect | .80 | 2.13 | .95 | .47 | -.81 |
| Material gain | .85 | 1.34 | .62 | 2.31 | 5.74 |
| Anger | .72 | 2.04 | .92 | .65 | -.45 |
| Fear | .68 | 1.06 | .21 | 3.92 | 14.37 |
|
| |||||
| Risky Behavior | |||||
| Substance abuse | .77 | 1.03 | .15 | 5.77 | 34.01 |
| Drug dealing | .85 | 1.25 | .54 | 2.67 | 8.44 |
| Gang involvement | .94 | 1.28 | .58 | 2.18 | 4.42 |
| Sensation seeking | .99a | 1.04 | .19 | 4.71 | 21.19 |
| Inadequately motivated | .91 | 1.07 | .33 | 6.05 | 43.95 |
Note: AICS= Aggressive Incident Coding Sheet
a
Because one rater no variability in ratings of sensation seeking behavior, percent agreement was calculated rather than an ICC, and indicated 99% agreement.