Rusbult's investment model

Question 1

An extension of SET

Answer 1

Rusbult’s investment model (2011) further developed SET

A satisfying relationship is one where the partners are getting more out of the relationship than they expect, given social norms and previous experiences

Question 2

Commitment results from 3 factors

Answer 2

1. Satisfaction: the extent to which partners feel the rewards of the romantic relationship exceed the costs (CL)
2. CLalt: a judgement about whether a relationship with a different partner would increase rewards and reduce costs
3. Investment: the resources associated with a romantic relationship which would be lost if the relationship ended

Question 3

Intrinsic investment

Answer 3

Any resources put directly into the relationship

For example, money, energy & self-disclosure

Question 4

Extrinsic investment

Answer 4

Investments that previously did not feature in the relationship which are now closely associated with it

For example, a jointly purchased house, children, shared memories

Question 5

Commitment determined by satisfaction + alternatives + investment

Answer 5

High levels of satisfaction (more rewards with few costs) + the alternatives are less attractive + the sizes of their investment are increasing = partners will be more committed to the relationship

Question 6

Satisfaction vs commitment

Answer 6

Commitment is the main factor that causes people to stay in romantic relationships, satisfaction contributes to commitment

This explains why a dissatisfied partner stays in a relationship when their level of investment is high. They will be willing to work hard to repair problems in the relationship so their investment will not be wasted

Question 7

Relationship maintenance mechanisms

Answer 7

Committed partners use maintenance behaviours to keep the relationship going, for example:

• Promoting the relationship (accommodation)
• Putting their partner’s interests first (willingness to sacrifice)
• Forgiving them for any serious transgressions (forgiveness)