Investment model

How does it develop SET?

• adds investment

• states that investment, satisfaction and alternatives lead to the commitment level.

the theory

• stat that certain factors influence relationships commitment level.

• when commitment high - relationship persist.

• factors - satisfaction, alternatives and investment.

types of investment

Intrinsic - resources put directly in e.g. time, self-disclosure, emotions.

Extrinsic - resources used outside relationship e.g. friendship, memories.

commitment

commitment increased by the amount of investment.

this means a person is more likely to stay in that relationship

cognitive elements

• positive illusions - people are unrealistically positive about their partners.

• ridiculing alternatives.

behavioural mechanisms making relationship last

• accommodation - promote relationship

• sacrifice - partner first

• forgiveness

AO3 - Supporting research

• Rusbult questionnaire

• asks those in relationship cost, benefit, alternatives and investment levels.

• found that - investment would increase and commitment would increase.

AO3 - limitation of Rusbult

• low validity to the study.

• questionnaire.

• and also social desirability effect.

AO3 - practical application

• understand people who are suffering in abusive relationships. IPV.

• women who were in domestic abuse shelter - would go back to their partners. know they were dissatisfied but they were committed to them.

• model shows satisfaction on its own cannot explain why people stay.

AO3 - limitation

• too simplistic.

• one dimensional

• more to investment than just resources you have put in.

• early stages - not much investment.