Initial spurt takes place as a general rule in addition, which the author argues chance variation cannot explain¶

Claim · All claims
Evidence · 1 study · associational r1 · q3
Currency · newest study 1914 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? For the addition function studied, the author concludes that initial spurt takes place as a general rule, and argues that no explanation based on chance variations can account for the period-to-period exceedance figures. → Chapman 1914

Evidence¶

Chapman 1914¶

Chapman, J. C. (1914). A Study of Initial Spurt in the Case of Addition. The Journal of Educational Psychology. https://doi.org/10.1037/h0070019

q3 · i? · associational · r1

Tabulation in the same addition experiment of how often each period's score exceeded the following period's score across the subjects. The author concludes that "initial spurt takes place as a general rule in this trait", and states that no explanation based on chance variations will account for the figures.

"The evidence presented in the case of this particular mental function can only lead to one conclusion, namely, that initial spurt takes place as a general rule in this trait."

Discussion¶

Related Claims¶

• The data cannot be used to investigate end spurt because subjects were not told when each test would end — related
• Prior initial-spurt experiments failed because test periods were too lengthy and subjects too few — related
• Addition efficiency drops sharply from the first to the second two-minute period, indicating initial spurt — related
• Efficiency in the work curve is conditioned by factors beyond fatigue proper: practice, adaptation, preparedness, warming up, spurts, voluntary effort, ennui, and diurnal rhythms (Offner) — a broader claim this one bears on