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In the branch of experimental psychology focused on sense, sensation, and perception, which is called psychophysics, a just-noticeable difference or JND is the amount something must be changed in order for a difference to be noticeable, detectable at least half the time. [1]
Dunbar's number has become of interest in anthropology, evolutionary psychology, [12] statistics, and business management.For example, developers of social software are interested in it, as they need to know the size of social networks their software needs to take into account; and in the modern military, operational psychologists seek such data to support or refute policies related to ...
The following diagnostic systems and rating scales are used in psychiatry and clinical psychology. This list is by no means exhaustive or complete. This list is by no means exhaustive or complete. For instance, in the category of depression, there are over two dozen depression rating scales that have been developed in the past eighty years.
1.1 White-noise stimuli Stevens' power law is an empirical relationship in psychophysics between an increased intensity or strength in a physical stimulus and the perceived magnitude increase in the sensation created by the stimulus.
Test construction strategies are the various ways that items in a psychological measure are created and decided upon. They are most often associated with personality tests but can also be applied to other psychological constructs such as mood or psychopathology.
Table 1: Kent's "words of estimative probability" [2] Certain 100% Give or take 0% The general area of possibility: Almost certain 93% Give or take about 6% Probable 75% Give or take about 12% Chances about even 50% Give or take about 10% Probably not 30% Give or take about 10% Almost certainly not 7% Give or take about 5% Impossible 0 Give or ...
The first form of the F-Scale correlated 0.53 with A-S, 0.65 to E and 0.54 to PEC. The scale was revised by dropping items with low item-total correlations and/or low predictive value of A-S and E scores. The revised form correlated by 0.75 to a combined A-S/E scale, and 0.57 to PEC.
Mehrabian, born in 1939 to an Armenian family in Iran, initially trained as an engineer, [1] but gained renown for his research on the relative importance of verbal and nonverbal communication. In addition to his scholarly work, Mehrabian developed several psychological assessment tools, including the Arousal Seeking Tendency Scale. [3]