Glossary I

Illness behavior refer to those activities undertaken by people who feel ill and who wish to discover their state of health, as well as suitable remedies.

Illness delay refers to the time between recognizing that a symptom implies an illness and the decision to seek treatment.

Illness representations (schemas) refer to an organized set of beliefs about an illness or a type of illness that include its nature, cause, duration, and consequences. .

Illocutionary force refers to the action that is performed by a speaker in uttering a sentence as stated in Speech act theory,

Illogical thought refers to a thought that is intuitive, haphazard, or irrational.

Illumination refers to an intermediate stage in problem solving in which the individual gains insight or discovers a potential solution to a problem

Illumination edge is defined as the border between two (2) areas created by different light intensities in the two (2) areas.

Illusion refers to an abnormal perception caused by a sensory misinterpretation of and actual stimulus, sometimes precipitated by strong emotion, e.g.