Glossary F

Frenulum is defined as the fold of skin on the underside of the penis.

Frequency may be defined as the number of sound waves per second. In the case of a sound wave that repeats itself, such as the sine wave of a pure tone, Frequency is the number of times per second that the wave repeats itself.

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Frequency distribution is defined as a plot of the number of scores occurring for each score value or for two (2) or more limited ranges of score values. It is an organized display of a set of scores that shows how many scores are located in each category on the scale of measurement ; the systematic arrangement of scores on a measure to reflect how frequently each value on the measure occurred. Moreover, Frequency distribution is defined as a description of the number of times the various attributes of a variable are observed in a sample. The report that 60 percent of a sample were married and 40 percent were single, is a simple example of a Frequency distribution.

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Frequency method refers to a technique for converting observations into numerical scores that involves counting the instances of each specific behavior that occur during a fixed-time observation period, in behavioral observation

Frequency of use principle refers to the notion that the arrangement of equipment, displays, and controls should be laid out in such a way that the most frequently used components are in the most accessible positions.

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Frequency spectrum is defined as a plot that indicates the amplitudes of the various harmonics that make up a complex tone. Each harmonic is indicated by a line that is positioned along the frequency axis, with the height of the line indicating the amplitude of the harmonic.

Frequency theory refers to a concept that pitch perception depends on differences in frequency of action potentials by auditory neurons; holds that tones up to 4,000 hertz are converted to nerve impulses that match the frequency of each tone.

Frequency tuning curve refers to a curve relating frequency and the threshold intensity for activating an auditory neuron.

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