Reliability of the Finger Tapping Test and a note on sex differences

Area of Science:

• Neuroscience
• Psychology
• Motor Control

Background:

• The Finger Tapping Test (FTT) is a common neuropsychological tool.
• Assessing its reliability is crucial for accurate clinical interpretation.
• Previous studies have yielded varied results on FTT reliability.

Purpose of the Study:

• To evaluate the test-retest and inter-examiner reliability of the FTT.
• To examine the reliability of both raw scores and ratio scores.
• To investigate potential sex differences in FTT performance.

Main Methods:

• Two studies were conducted involving 60 male and 60 female college students.
• Test-retest reliability was assessed by repeated testing with the same examiner.
• Inter-examiner reliability was evaluated using two different examiners.

Main Results:

• High reliability coefficients (approximately 0.8) were found for dominant and nondominant hand scores.
• The ratio score demonstrated lower reliability (approximately 0.5), questioning its use for lateralizing impairment.
• Significant sex differences were observed, with males performing faster.

Conclusions:

• The FTT is reliable for assessing hand tapping speed, but the ratio score's utility is questionable.
• Sex differences necessitate careful consideration in FTT interpretation.
• Standardized interpretation schemes may need revision to account for sex variations.