Fitts’s law

the principle of motor control that activities that are performed more quickly tend to be done less accurately (see speed–accuracy tradeoff). It is formulated as MT = a + b f(DW), observed under a wide array of conditions to relate movement time (MT) linearly to a function f(DW) of the ratio of movement distance (D) and target size (W). [Paul Morris Fitts]

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Psychology term of the day

May 9th 2024

slow-wave sleep

deep sleep that is characterized by increasing percentages of particular types of delta waves on the electroencephalogram, corresponding to Stages 3 and 4 of NREM sleep. See also sleep stages.