Glossary I

Investment model of close relationships according to this model, satisfaction and stability in a relationship depend on the degree to which its partners feel committed to the relationship. Commitment is determined by the balance or trade-off between the positive and negative aspects of the relationship, with the idea that people compare the value of their current relationship with the value of available alternatives

Investment theory of creativity refers to recent theory specifying that the ability to invest in innovative projects and to generate creative solutions depends on a convergence of creative resources, namely background knowledge, intellectual abilities, personality characteristics, motivation, and environmental support/encouragement.

Investments is a term In Rusbult's Investment model which refer to tangible and intangible things one has put into a relationship that would be lost if the relationship were dissolved. Investments are things that people contribute to a relationship that they can't get back if the relationship ends.

Invisible disabilities are hidden neurological conditions that present significant challenges to learning, interacting with others, regulating mood and thinking patterns and to otherwise experiencing a fulfilling lifestyle.

Invisible support is when one receives help from another, but is unaware of it; support that is most likely to benefit a person.

Involuntary commitment is defined as hospitalization that occurs against the will of the individual.

Involuntary manslaughter is defined as homicide in which the perpetrator unintentionally but recklessly causes the death of another person by consciously taking a grave risk that endangers the person's life.

Involvement is defined as an individual's participation in conventional activities.