Measuring habits

Question 1

Outcome-devaluation test

Answer 1

Experiment used to determine whether certain behavior is goal-directed or habitual. Consisting of three phases

Question 2

Phase 1

Answer 2

Instrumental learning phase. Hungry rat is trained to press a lever to obtain food

Question 3

Phase 2

Answer 3

Outcome devaluation phase. Rat is removed from the box and receives unlimited access to foor pallets in separate cage. Devaluing through satiation

Question 4

Phase 3

Answer 4

Critical test phase. Rat is returned, if it presses the pedal it is habit behaviour as it anticipates the food pallet which they’re not interested in anymore.

Question 5

Extinction

Answer 5

After test phase, food pellets are no longer offered when pressing lever. Extinction is quick, but if food is offered you can’t tell the type of behavior

Nominal = with use of reward, but not immediately

Question 6

Outcome

Answer 6

Goal-directed is seen after moderate training

overtraining leads to insensitivity: habit behavior

Only in the same context, new context shows goal-directed behavior again