Haab’s pupillary reflex

the normal contraction of both pupils when the eyes focus on a bright object in a darkened room. [Otto Haab (1850–1931), Swiss ophthalmologist]

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Psychology term of the day

November 28th 2024

fatigue effect

a decline in performance on a prolonged or demanding research task that is generally attributed to the participant becoming tired or bored with the task. The fatigue effect is an important consideration when administering a lengthy survey or test in which participants’ performance may worsen simply due to the challenges of an extended task.