fixed parameter

a specific value assigned (as opposed to estimated) by a researcher when testing a statistical model. For example, in structural equation modeling, researchers may use a fixed parameter of 1.0 for one of the factor loadings or variances of each latent variable in a model. Compare free parameter.

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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.