lipreading

n. a method used by some people with hearing loss to understand spoken words in which the listener interprets the speaker’s lip movements. Some authorities claim that only about one third of speech sounds can be accurately read in this way and that attention to facial expression and general body language, with the additional use of sign language, assist significantly in comprehension. Also called speechreading.

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Psychology term of the day

November 22nd 2024

constant error

a systematic error in some particular direction. Constant error is computed as the average positive or negative difference between the observed and actual values along a dimension of interest. For example, if a weight of 1 kg is judged on average to be 1.5 kg, and a weight of 2 kg is judged to be 2.5 kg, the constant error is 500 g. See also absolute error; random error.