Hare Psychopathy Checklist (Original) (PCL-22) Research Statistics
- Sample Adequacy: Established dataset with reasonably stable norms.
- Research Status: ESTABLISHED DATASET
- Items: 22
- Dimensions: 10
Community psychometric dataset, normative statistics, distribution analysis, and reliability metrics generated from anonymous participant responses.
Sample Information
Country Distribution
Current norms are primarily based on participants from IN (99.1% of the sample). Normative estimates may not yet generalize to other countries, cultures, or demographic groups.
Normative Percentiles
| Percentile | Score |
|---|---|
| 10th | 34% |
| 25th | 34% |
| 50th | 39% |
| 75th | 59% |
| 90th | 98% |
Distribution Histogram
Distribution Quality
The score distribution demonstrated
a skewness of
0.92
and a kurtosis of
0.13.
The score distribution appears reasonably balanced and does not currently suggest substantial departures from normality.
Reliability Analysis
The assessment demonstrated excellent internal consistency reliability (Cronbach's α = 0.955), suggesting that the assessment items measure a relatively coherent psychological construct.
Normative Percentiles
| Percentile | Score |
|---|---|
| 10th | 34% |
| 25th | 34% |
| 50th | 39% |
| 75th | 59% |
| 90th | 98% |
Item–Total Correlations
| Item | Correlation | Interpretation |
|---|---|---|
| Q1 | 0.646 | Excellent |
| Q2 | 0.732 | Excellent |
| Q3 | 0.681 | Excellent |
| Q4 | -0.07 | Problematic |
| Q5 | 0.475 | Acceptable |
| Q6 | 0.805 | Excellent |
| Q7 | 0.781 | Excellent |
| Q8 | 0.807 | Excellent |
| Q9 | 0.717 | Excellent |
| Q10 | 0.806 | Excellent |
| Q11 | 0.69 | Excellent |
| Q12 | 0.948 | Excellent |
| Q13 | 0.863 | Excellent |
| Q14 | 0.211 | Weak |
| Q15 | 0.742 | Excellent |
| Q16 | 0.909 | Excellent |
| Q17 | 0.531 | Excellent |
| Q18 | 0.693 | Excellent |
| Q19 | 0.521 | Excellent |
| Q20 | 0.852 | Excellent |
| Q21 | 0.808 | Excellent |
| Q22 | 0.876 | Excellent |
Dimension Norms
| Dimension | Mean | SD | N |
|---|---|---|---|
| Interpersonal Manipulation | 38.36 | 13.6 | 80 |
| Grandiosity and Narcissism | 38.75 | 21.75 | 80 |
| Behavioral Instability | 70 | 16.11 | 80 |
| Callousness and Lack of Empathy | 51.89 | 8.41 | 80 |
| Emotional Detachment | 27.5 | 44.22 | 80 |
| Irresponsibility | 37.81 | 21.78 | 80 |
| Impulsivity | 42.74 | 16.94 | 80 |
| Antisocial Behavior | 27.5 | 22 | 80 |
| Social Deviance | 41.61 | 17.63 | 80 |
| Criminal Versatility | 20 | 32.41 | 80 |
A total of 117 participant responses were available for this assessment. Dimension-level norms were calculated using 80 valid response records. Approximately 37 response record(s) were excluded from dimension-level normative calculations due to incomplete response patterns, historical data inconsistencies, or automated data-quality screening procedures.
Research Interpretation
This psychometric dataset currently includes 117 anonymous participant responses collected through voluntary participation. The observed mean score was 50.94 with a standard deviation of 22.4, indicating moderate score variability within the sampled population. Internal consistency reliability analysis demonstrated excellent reliability (Cronbach alpha = 0.955). Observed skewness (0.92) and kurtosis (0.13) were examined as indicators of distribution quality. The score distribution appeared reasonably balanced and did not suggest substantial departures from normality.
Research Citation
Robert D. Hare,Hare Psychopathy Checklist (Original) (PCL-22). TraitProfiler Preliminary Interactive Research Version. Retrieved from https://traitprofiler.com
Ethical & Research Notice
All responses included in this dataset are collected anonymously through voluntary participation. No personally identifying information is stored. Results are intended exclusively for educational, psychometric, research, and self-reflective purposes and should not be used as clinical diagnoses. Trait Profiler continuously monitors response quality, distribution stability, and internal consistency to support ethical psychometric reporting.