Test of Mechanical Abilities – Revised Edition [TEMA-R]

Description

The Test of Mechanical Abilities – Revised Edition (TEMA-R) is an assessment instrument designed to evaluate visuospatial processing and mechanical problem-solving abilities. It is intended for use with engineering education candidates, in vocational guidance, and in technical skills assessment.

According to the provided material, the author is I. Tsausis, and the revised edition dates from 2020. Administration takes approximately 45–60 minutes, and the test is available in both paper-and-pencil and digital formats.

Purpose

The main purpose of the TEMA-R is to provide a comprehensive assessment of abilities related to:

• mechanical comprehension,
• visuospatial processing,
• technical problem solving,
• technical and engineering potential.

The instrument may support educational and vocational decision-making, as well as the identification of strengths and areas requiring further development.

Structure

The TEMA-R consists of three main subscales:

• Mechanical Comprehension: 15 items covering gear and pulley systems and force diagrams.
• Spatial Visualization: 12 items assessing 3D object rotation and blueprint interpretation.
• Technical Problem-Solving: 18 items examining fault diagnosis and system optimization.

Scoring

Each item is scored from 1 to 5 points. According to the provided material, scoring is based on:

• Accuracy: 70%
• Speed: 30%

The score interpretation is presented as follows:

• 85–100: Exceptional, ≥90th percentile
• 70–84: Above Average
• 55–69: Average
• 40–54: Below Average
• <40: Needs Training

Reliability

The provided material reports high reliability indicators:

• Internal Consistency: Cronbach’s α = 0.92
• Test-Retest Reliability: r = 0.89 over a six-week interval
• Inter-Rater Reliability: κ = 0.85

These values indicate high internal consistency and stability of measurement according to the source.

Validity

Construct validity is reported through Confirmatory Factor Analysis (CFA) with:

• CFI = 0.93
• RMSEA = 0.04

Criterion validity is reported through correlations of:

• r = 0.82 with the Bennett Mechanical Comprehension Test
• r = 0.76 with engineering GPA

Target Population

The TEMA-R is intended primarily for:

• engineering students,
• technical and vocational trainees,
• career counseling clients.

Administration Requirements

According to the provided material, administration requires:

• a bachelor’s degree in psychology or a related field,
• certification in psychological testing.

Applications

The TEMA-R may be used in career assessment, vocational guidance, technical education, and mechanical aptitude evaluation.

Its results may support the identification of strengths and weaknesses in mechanical, spatial, and technical problem-solving abilities and may assist in decisions related to education, training, and career development.

References

Chatzis, A., & Chatzistamatiou, M. (2018). Contemporary Psychometric Tools. Athens: Pedagogical Institute.

Bennett, G. K. (2015). Mechanical aptitude testing. Journal of Vocational Assessment, 12(3).