Glossary I

illusion of group productivity refers to the tendency for members to believe that their groups are performing effectively.
Illusion of incompetence refers to illusions expressed by children who perform well in academic achievement tests yet perceive themselves as below average in academic ability and behave in accordance with this perception.
Illusion of invulnerability refers to adolescents’ belief that misfortunes cannot happen to them
Illusion of Knowing refers to an inaccurate over-confidence about one's knowledge and understanding.

Illusion of transparency refers to the illusion that our concealed emotions leak out and can be easily read by others.

Illusory conjunction refers to illusory combination of features that are perceived when stimuli containing a number of features are presented briefly and under conditions in which focused attention is difficult. For example, presenting a red square and a blue triangle could potentially create the perception of a red triangle.
Illusory contour is defined as a contour that is perceived even though it is not present in the physical stimulus.

Illusory Correlation .refers to the perception of a relationship where None exists.It is the tendency to see relationships, or correlations, between events that are actually unrelated

Illusory correlations help explain many superstitious and erroneous beliefs such as the presumption that the full moon causes abnormal behavior, that sugar makes children hyperactive, and that weather changes trigger arthritis pain.