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SOMNOLOGY

The study of sleep and its disorders.

SORT-RECALL TASK

used in memory research where items are sorted into groups and then are recalled.

SOURCE CREDIBILITY

the extent of a message being accurate and is determined by source expertise and trustworthiness. Its other name is source

SPASMODIC DYSPHONIA

a rare disorder of a person's voice with periods of vocal spasms, tight throat, and recurrent hoarseness. There is no

SPATIAL RELATIONSHIPS

Spatial relationships are the 3D relationships of objects in space, like relative position and distance apart. Also called spatial relations.

SPECIATION

the formation of a new species where a population splits in 2 that are isolated from each other.

SPECIFICITY

1. the quality of being unique from everything else. 2. A probability that a person will test negative for a

SPECTROSCOPY

the study of electromagnetic radiation as it interacts with matter. It is used in chemical analysis and to explain molecular

SPEECH FUNCTIONS

These are the reasons for speech such as communication and to maintain social relationships. See speech act.

SPEECH-TOLERANCE LEVEL

the sound level of speech that is too loud and uncomfortable to listen hear.

SPHERICAL LENS

a lens where one or both surfaces are portions of a sphere.

SPINAL CORD

part of the central nervous system that goes from the lower end of the medulla oblongata, at the base of

SPIRIT

1. The part of a person that is not physical. 2. The vital source emanating from a living creature such

SPLIT-SPAN TEST

the test where brief auditory messages in the form of two different lists of digits or words are presented rapidly

SPONTANEOUS REMISSION

the reduction or disappearance of symptoms without any therapeutic intervention, which may be temporary or permanent. It most commonly refers

SPORTS IMAGERY

the imagery used by participants in sport for learning and perfecting new skills, for mental rehearsal and for controlling emotions.

SRT 1

An abbreviation for simple reaction time and speech reception threshold.

STAGE

a discrete period of time where functioning is different to other times.

STALKING LAW

the law that makes it a crime to continually follow a person, harass or threaten them and give them a

STANDARDIZED INSTRUCTIONS

a list of instructions for all participants that is the same for all people.