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Anhedonia Test

Research Dataset

Deenz Multidimensional Anhedonia Scale (DMAS-27)

Normative and Psychometric Statistics
ROBUST N=812 α=0.917 66Countries
Abstract

Deenz Multidimensional Anhedonia Scale (DMAS-27) normative dataset currently contains 812 participant records collected between Jun 11, 2026 and Nov 12, 2026 .

This psychometric dataset currently includes 812 anonymous participant responses collected through voluntary participation. The observed mean score was 64.05 with a standard deviation of 16.05, indicating moderate score variability within the sampled population. Internal consistency reliability analysis demonstrated excellent reliability (Cronbach alpha = 0.917). Observed skewness (-0.87) and kurtosis (1.32) were examined as indicators of distribution quality. The score distribution appeared reasonably balanced and did not suggest substantial departures from normality.

812
Participants
66
Countries
27
Scale Items
0.917
Reliability
Table 1
Dataset Overview
Assessment Deenz Multidimensional Anhedonia Scale (DMAS-27)
Research Status Robust Dataset
Dataset Maturity 90 /100 — ROBUST
Participants 812
Countries Represented 66
Items 27
Dimensions 3
Data Collection Period Jun 11, 2026 – Nov 12, 2026
Reliability α = 0.917
Note. The current Deenz Multidimensional Anhedonia Scale (DMAS-27) dataset contains 812 participant records collected from 66 countries. Dataset maturity reflects sample size, geographic diversity, and internal consistency reliability.
Table 2
Descriptive Statistics
Statistic Value
Mean Score 64.05%
Median Score 66
Standard Deviation 16.05
Variance 257.49
Standard Error 0.56
95% CI Lower 62.95
95% CI Upper 65.16
Minimum Score 0%
Maximum Score 96%
Observed Range 96
Note. M = 64.05, SD = 16.05, Median = 66. The 95% confidence interval ranged from 62.95 to 65.16.
Table 3
Sample Characteristics
Variable Summary
Participants N = 812
Countries 66
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 66 countries. The largest contribution originated from DE (22.3% of available geographic records).
Table 4
Percentile Norms
Percentile Score Interpretation
10th 44% Very Low
25th 56% Below Average
50th 66% Average
75th 75% Above Average
90th 82% Elevated
Note. Percentile values provide preliminary normative benchmarks derived from the current Deenz Multidimensional Anhedonia Scale (DMAS-27) sample.
Figure 2
Score Distribution
Note. Observed scores ranged from 0% to 96% (M = 64.05, SD = 16.05). Distribution characteristics included skewness (-0.87) and kurtosis (1.32). Distribution indices suggested no substantial departures from normality.
Table 5
Reliability Analysis
Metric Value
Cronbach Alpha 0.917
Reliability Classification Excellent
Participants 812
Items 27
Standard Error 0.56
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
Item Item Quality r Rating Q25 0.67 Excellent Q24 0.67 Excellent Q3 0.65 Excellent Q4 0.64 Excellent Q21 0.63 Excellent Q11 0.6 Excellent Q19 0.59 Excellent Q26 0.57 Excellent Q18 0.57 Excellent Q20 0.57 Excellent Q16 0.56 Excellent Q17 0.56 Excellent Q7 0.55 Excellent Q1 0.53 Excellent Q23 0.52 Excellent Q8 0.51 Excellent Q9 0.51 Excellent Q15 0.5 Acceptable Q13 0.49 Acceptable Q6 0.48 Acceptable Q10 0.46 Acceptable Q2 0.43 Acceptable Q22 0.42 Acceptable Q12 0.41 Acceptable Q14 0.4 Acceptable Q5 0.39 Acceptable Q27 -0.01 Problematic
Item Analysis Interpretation

Item–total correlations were generally strong across the assessment, indicating that most items contribute effectively to the measurement of the underlying construct. The analysis identified1 itemthat may benefit from future review.

Items Recommended for Future Review
  • Q27 (r = -0.01)
    I often make little effort to enjoy activities I used to like.
The lowest item–total correlation was observed for Q27 ("I often make little effort to enjoy activities I used to like."; r = -0.01), indicating comparatively weaker alignment with the overall construct.
Table 7
Dimension Norms
Dimension Mean SD N
Emotional Anhedonia 67.31% 16.87 812
Social Anhedonia 67.12% 18.75 812
Physical Anhedonia 57.64% 20.03 812
Note. Dimension statistics summarize normative performance across the major constructs measured by Deenz Multidimensional Anhedonia Scale (DMAS-27).
Figure 5
Dimension Profile
Note. The highest observed dimension was Emotional Anhedonia (67.3%), whereas the lowest observed dimension was Physical Anhedonia (57.6%). The observed difference between dimensions was 9.7 percentage points. Moderate variation was observed between dimensions.
Table 8
Dataset Growth Summary
Metric Value
Current Participants 812
Countries 66
Collection Start Jun 11, 2026
Collection End Nov 12, 2026
Months Recorded 6
Note. Growth statistics summarize cumulative participation throughout the observed data collection period.
Normative Data Notice

A total of 812 participant responses were available for this assessment. Dimension-level norms were calculated using 812 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

Deenz Multidimensional Anhedonia Scale (DMAS-27). Research Dataset. Retrieved from https://drdeenz.com/anhedonia-test/statistics/

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