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Mach IV Scale (Machiavellianism Test) Research Statistics

Assessment Information
  • Sample Adequacy: Established dataset with reasonably stable norms.
  • Research Status: ESTABLISHED DATASET
  • Items: 20
  • Dimensions: 3
  • Dataset Maturity: The current dataset achieved a maturity score of 70/100 and is classified as STRONG.

Table 1
Normative Dataset Overview
Descriptive characteristics of the current normative sample.
Participants 154
Countries Represented 33
Dataset Maturity 70/100 — StrongDataset
Research Status ESTABLISHED NORMATIVE DATASET
Sample Adequacy Established dataset with reasonably stable norms.
Data Collection Period May 21, 2026 – Oct 26, 2026
The current normative dataset consists of 154 participants collected from 33 countries.
Table 2
Score Statistics
Measures of central tendency and variability.
Mean Score 40.42%
Median Score 42.5
Standard Deviation 15.29
Variance 233.93
Standard Error (SEM) 1.23
Reliability (α) 0.924
Items 20
Dimensions 3
The sample demonstrated a mean score of 40.42% (Mdn = 42.5, SD = 15.29).
Table 3
Distribution Characteristics
Distribution shape and score dispersion indicators.
Observed Score Range 75
Maximum Observed Score 86%
Minimum Observed Score 11%
95% Confidence Interval 38.01– 42.84
Skewness -0.03
Kurtosis -0.58
Observed skewness (-0.03) and kurtosis (-0.58) provide indicators of distribution quality and normality.
Global Participation Chart Participants IN 50 #1 US 18 #2 CN 15 #3 AU 13 #4 ID 7 #5 PH 3 #6 DE 3 #7 NZ 3 #8 UA 3 #9 IL 3 #10 SG 3 #11 MY 2 #12 RO 2 #13 CH 2 #14 ES 2 #15 IE 2 #16 GB 2 #17 ZA 2 #18 PL 2 #19 GR 2 #20 VN 2 #21 FR 2 #22 SE 1 #23 JO 1 #24 XK 1 #25 NO 1 #26 QA 1 #27 LB 1 #28 BD 1 #29 IR 1 #30 BR 1 #31 CA 1 #32 BA 1 #33
Global Participation Interpretation

The current dataset includes responses from 33countries . The largest contribution currently comes from IN which represents approximately 32.5% of all participants. International participation enhances sample diversity and improves the generalizability of normative findings across geographic regions.

Normative Percentile Distribution

Population Median 10th Percentile 20 Population Median 25th Percentile 27 Population Median 50th Percentile 42 Population Median 75th Percentile 54 Population Median 90th Percentile 55
Normative Interpretation

The current normative dataset indicates that approximately 10% of participants scored below 20%, while 90% scored above this level. The median score was 42%, meaning that half of participants scored below this value and half scored above it. Scores of 54% or greater were achieved by approximately the highest 25% of participants, whereas scores of 55% or greater were achieved by approximately the highest 10% of participants. These percentile values provide preliminary normative benchmarks that can be used to contextualize individual assessment results relative to the current community sample.

Distribution Histogram

10-19 15 20-29 28 30-39 26 40-49 31 50-59 45 60-69 5 70-79 3 80-89 1
Distribution Interpretation

This histogram displays the distribution of participant scores across the assessment. A balanced bell-shaped pattern generally indicates good score dispersion and stronger normative utility, whereas highly skewed distributions may indicate floor effects, ceiling effects, or sample bias.

Distribution Quality

The score distribution demonstrated a skewness of -0.03 and a kurtosis of -0.58.

The score distribution appears reasonably balanced and does not currently suggest substantial departures from normality.

Reliability Analysis

0.924 Poor Acceptable Good Excellent

EXCELLENT RELIABILITY

The assessment demonstrated excellent internal consistency reliability (Cronbach's α = 0.924), suggesting that the assessment items measure a relatively coherent psychological construct.

Item–Total Correlations

Item Item Quality r Rating Q12 0.77 Excellent Q6 0.74 Excellent Q5 0.73 Excellent Q13 0.73 Excellent Q1 0.72 Excellent Q11 0.69 Excellent Q8 0.68 Excellent Q9 0.67 Excellent Q10 0.67 Excellent Q14 0.65 Excellent Q7 0.61 Excellent Q2 0.59 Excellent Q15 0.58 Excellent Q20 0.52 Excellent Q4 0.52 Excellent Q3 0.49 Acceptable Q18 0.49 Acceptable Q19 0.48 Acceptable Q16 0.37 Acceptable Q17 0.15 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 identified 1 itemthat may benefit from future review.

Items Recommended for Future Review
  • Q17 (r = 0.15)
    P.T. Barnum was wrong when he said that there's a sucker born every minute.

Lower item–total correlations may indicate weaker alignment with the overall construct, greater response variability, or the need for further refinement. These findings should be interpreted cautiously and considered alongside additional psychometric evidence as the normative sample grows.

Dimension Norms

Dimension Profile Mean SD 50% Pragmatic Morality 47.5% 16.9 Cynical Worldview 38.9% 16.8 Manipulative Strategy 34.4% 18.7
Dimension Interpretation

The highest scoring dimension in the current sample was Pragmatic Morality (47.5%). The lowest scoring dimension was Manipulative Strategy (34.4%). Dimensions located above the 50% reference line represent characteristics that were more strongly endorsed within the current participant sample. Standard deviations indicate the degree of variability observed across participant responses.

Research Interpretation

This psychometric dataset currently includes 154 anonymous participant responses collected through voluntary participation. The observed mean score was 40.42 with a standard deviation of 15.29, indicating moderate score variability within the sampled population. Internal consistency reliability analysis demonstrated excellent reliability (Cronbach alpha = 0.924). Observed skewness (-0.03) and kurtosis (-0.58) were examined as indicators of distribution quality. The score distribution appeared reasonably balanced and did not suggest substantial departures from normality.

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.

Dataset Export

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Research Citation

Mach IV Scale (Machiavellianism Test). Trait Profiler Interactive Research Dataset. Retrieved from https://traitprofiler.com/mach-iv-machiavellianism-test/statistics/

License: Creative Commons Attribution 4.0 International (CC BY 4.0)