Subjective fatigue states under prolonged mental work included failure to hold and banish partial products, lethargy, and labored breathing¶

Claim · All claims
Evidence · 1 study · causal r1 · q1
Currency · newest study 1914 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q1 i? The experimenter's notes describe growing inability to banish previous partial products, loss of memory requiring restarts, lethargy, and increasingly heavy breathing. → W. S. Painter 1914

Evidence¶

W. S. Painter 1914¶

W. S. Painter. (1914). Efficiency in Mental Multiplication Under Extreme Fatigue. The Journal of Educational Psychology. https://psycnet.apa.org/journals/edu/

q1 · i? · causal · r1

First-person qualitative account of the final test's subjective conditions, reported in full by the author. Notes cover the first hour's little fatigue growth, second-hour bodily weariness, third-hour lethargy, and heavy breathing near the end.

"My growing inability to banish from memory previous partial products and to hold the new ones that I wanted, inability to speed up, greater and greater length of time neces- sarily spent in repeating partial products and sums, loss of mem- ory so as to have to start problems over, etc., were all very promi- nent mental states."

Discussion¶

Related Claims¶

• Under extreme fatigue, mental multiplication efficiency ends at a definite, relatively abruptly appearing point rather than tailing off by degrees — related
• When four-place by four-place mental multiplication came to a standstill under extreme fatigue, ability to multiply any numbers was also lost — related
• Psychological methods of fatigue measurement afford useful average values and reliable information about the course and effect of fatigue (Offner) — a broader claim this one bears on