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Lecture 12

PSYC 361 Lecture 12: lecture12

1 pages49 viewsSpring 2018

Department
Psychology
Course Code
PSYC 361
Professor
Catharine Winstanley
Lecture
12

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Drive theory
Regulatory: mental homeostasis
o Internal need (response to stimulus is environment)-> Drive -> Activity -> Goal -> Rest
o Reflexive, not purposive, not anticipatory. Goal is to restore equilibrium-no concept of
future
Purposive: goal-directed behaviour
o No need for concept of internal drive - all about choices what makes us value certain goals
Adaptive acts
Organisms make adaptations and adjustments
o Need: excess/deficiency related to homeostasis eg food deprivation and pain which lead to
behavioural actions, but also vitamin/oxygen deficiency which do not always stimulate
behaviour. (eg. Lack of vitamin B)
o Drive: can be the same as need, but always stimulates behaviour
Hull's Drive theory
Vigor or intensity of response = Habit x Drive
o In a example of rat running down alleyway to reach water:
o Measured as speed of running
o Determined as number of learning trials, amount of training
o Determined by hours of water deprivation
Drive believed to energize all responses equally, does not direct or select particular responses
Response that is most strongly associated with stimuli present is most likely to occur
Simple vs complex responses: predictions
Simple response situation - improved performance is high levels of drive
Complex response situation - multiple competing responses. Driving manually. Need to learn
correct sequence. Different response components compete with each other before sequence is
well-learned. Increased drive potentiates all responses, so that interference between competing
response becomes worse-decreased performance. High levels of drive will reduce performance
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