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Difficult Person Test - Research-Based Self-Check

Research Dataset

Difficult Person Traits Scale (DDTS)

Normative and Psychometric Statistics
DEVELOPING N=62 α=0.902 24Countries
Abstract

Difficult Person Traits Scale (DDTS) normative dataset currently contains 62 participant records collected between Jun 11, 2026 and Aug 10, 2026 .

This psychometric dataset currently includes 62 anonymous participant responses collected through voluntary participation. The observed mean score was 48.29 with a standard deviation of 14.47, indicating moderate score variability within the sampled population. Internal consistency reliability analysis demonstrated excellent reliability (Cronbach alpha = 0.902). Observed skewness (0.26) and kurtosis (1.06) were examined as indicators of distribution quality. The score distribution appeared reasonably balanced and did not suggest substantial departures from normality.

62
Participants
24
Countries
35
Scale Items
0.902
Reliability
Table 1
Dataset Overview
Assessment Difficult Person Traits Scale (DDTS)
Research Status Developing Dataset
Dataset Maturity 60 /100 — DEVELOPING
Participants 62
Countries Represented 24
Items 35
Dimensions 7
Data Collection Period Jun 11, 2026 – Aug 10, 2026
Reliability α = 0.902
Note. The current Difficult Person Traits Scale (DDTS) dataset contains 62 participant records collected from 24 countries. Dataset maturity reflects sample size, geographic diversity, and internal consistency reliability.
Table 2
Descriptive Statistics
Statistic Value
Mean Score 48.29%
Median Score 46
Standard Deviation 14.47
Variance 209.46
Standard Error 1.84
95% CI Lower 44.69
95% CI Upper 51.89
Minimum Score 6%
Maximum Score 85%
Observed Range 79
Note. M = 48.29, SD = 14.47, Median = 46. The 95% confidence interval ranged from 44.69 to 51.89.
Table 3
Sample Characteristics
Variable Summary
Participants N = 62
Countries 24
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 24 countries. The largest contribution originated from BR (27.4% of available geographic records).
Table 4
Percentile Norms
Percentile Score Interpretation
10th 36% Very Low
25th 39% Below Average
50th 46% Average
75th 56% Above Average
90th 64% 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 85% (M = 48.29, SD = 14.47). Distribution characteristics included skewness (0.26) and kurtosis (1.06). Distribution indices suggested no substantial departures from normality.
Table 5
Reliability Analysis
Metric Value
Cronbach Alpha 0.902
Reliability Classification Excellent
Participants 62
Items 35
Standard Error 1.84
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: 62
Minimum Recommended: 100
Table 7
Dimension Norms
Dimension Mean SD N
Rigidity 58.95% 23.12 62
Aggressiveness 57.05% 23.02 62
Defensiveness 54.05% 21.77 62
Stubbornness 51.53% 20.52 62
Impulsiveness 48.71% 23.52 62
Grandiosity 40.32% 23.24 62
Callousness 28.05% 20.03 62
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 (59%), whereas the lowest observed dimension was Callousness (28.1%). The observed difference between dimensions was 30.9 percentage points. Substantial variation was observed between dimensions.
Table 8
Dataset Growth Summary
Metric Value
Current Participants 62
Countries 24
Collection Start Jun 11, 2026
Collection End Aug 10, 2026
Months Recorded 3
Note. Growth statistics summarize cumulative participation throughout the observed data collection period.
Normative Data Notice

A total of 62 participant responses were available for this assessment. Dimension-level norms were calculated using 62 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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