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Difficult Person Test - Research-Based Self-Check

Research Dataset

Difficult Person Traits Scale (DDTS)

Normative and Psychometric Statistics
DEVELOPING N=72 α=0.908 27Countries
Abstract

Difficult Person Traits Scale (DDTS) normative dataset currently contains 72 participant records collected between Jun 11, 2026 and Aug 27, 2026 .

This psychometric dataset currently includes 72 anonymous participant responses collected through voluntary participation. The observed mean score was 49.46 with a standard deviation of 14.86, indicating moderate score variability within the sampled population. Internal consistency reliability analysis demonstrated excellent reliability (Cronbach alpha = 0.908). Observed skewness (0.21) and kurtosis (0.85) were examined as indicators of distribution quality. The score distribution appeared reasonably balanced and did not suggest substantial departures from normality.

72
Participants
27
Countries
35
Scale Items
0.908
Reliability
Table 1
Dataset Overview
Assessment Difficult Person Traits Scale (DDTS)
Research Status Developing Dataset
Dataset Maturity 60 /100 — DEVELOPING
Participants 72
Countries Represented 27
Items 35
Dimensions 7
Data Collection Period Jun 11, 2026 – Aug 27, 2026
Reliability α = 0.908
Note. The current Difficult Person Traits Scale (DDTS) dataset contains 72 participant records collected from 27 countries. Dataset maturity reflects sample size, geographic diversity, and internal consistency reliability.
Table 2
Descriptive Statistics
Statistic Value
Mean Score 49.46%
Median Score 47
Standard Deviation 14.86
Variance 220.87
Standard Error 1.75
95% CI Lower 46.03
95% CI Upper 52.89
Minimum Score 6%
Maximum Score 87%
Observed Range 81
Note. M = 49.46, SD = 14.86, Median = 47. The 95% confidence interval ranged from 46.03 to 52.89.
Table 3
Sample Characteristics
Variable Summary
Participants N = 72
Countries 27
Age Information Available
Gender Information Available
Note. Demographic information was collected voluntarily. Participant counts may vary across demographic categories when information was not reported.
Figure 1
Global Participation
Note. Participants were represented across 27 countries. The largest contribution originated from BR (26.4% of available geographic records).
Table 4
Percentile Norms
Percentile Score Interpretation
10th 36% Very Low
25th 40% Below Average
50th 47% Average
75th 58% Above Average
90th 66% Elevated
Note. Percentile values provide preliminary normative benchmarks derived from the current Difficult Person Traits Scale (DDTS) sample.
Figure 2
Score Distribution
Note. Observed scores ranged from 6% to 87% (M = 49.46, SD = 14.86). Distribution characteristics included skewness (0.21) and kurtosis (0.85). Distribution indices suggested no substantial departures from normality.
Table 5
Reliability Analysis
Metric Value
Cronbach Alpha 0.908
Reliability Classification Excellent
Participants 72
Items 35
Standard Error 1.75
Note. Internal consistency was estimated using Cronbach alpha. Reliability estimates are based on the current normative dataset and may change as additional responses are collected.
Item–Total Correlations
Insufficient Sample Size

Item–total correlations are not currently reported because the assessment has fewer than 100 participant responses. Psychometric item analysis requires a larger sample to produce stable and interpretable estimates.

Current Participants: 72
Minimum Recommended: 100
Table 7
Dimension Norms
Dimension Mean SD N
Rigidity 60.49% 22.41 72
Aggressiveness 59.26% 24.33 72
Defensiveness 54.04% 22.4 72
Stubbornness 53.06% 21.16 72
Impulsiveness 48.82% 22.79 72
Grandiosity 42.71% 24.98 72
Callousness 28.39% 19.48 72
Note. Dimension statistics summarize normative performance across the major constructs measured by Difficult Person Traits Scale (DDTS).
Figure 5
Dimension Profile
Note. The highest observed dimension was Rigidity (60.5%), whereas the lowest observed dimension was Callousness (28.4%). The observed difference between dimensions was 32.1 percentage points. Substantial variation was observed between dimensions.
Table 8
Dataset Growth Summary
Metric Value
Current Participants 72
Countries 27
Collection Start Jun 11, 2026
Collection End Aug 27, 2026
Months Recorded 3
Note. Growth statistics summarize cumulative participation throughout the observed data collection period.
Normative Data Notice

A total of 72 participant responses were available for this assessment. Dimension-level norms were calculated using 72 valid response records. Approximately 0 response record(s) were excluded from dimension-level normative calculations due to incomplete response patterns.

Limitations

Normative statistics are derived from voluntary participation and may not represent all populations. Reliability estimates, percentile norms, and dimension statistics should be interpreted in the context of the current sample and may change as additional responses are collected.

Ethical Statement

All records included in this dataset were collected anonymously. No personally identifying information is stored. Data are intended for educational, psychometric, and research purposes.

Recommended Citation

Difficult Person Traits Scale (DDTS). Research Dataset. Retrieved from https://drdeenz.com/difficult-person-test/statistics/

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