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Lecture 12

PSYC 361 Lecture 12: lecture12

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PSYC 361
Catharine Winstanley

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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 equilibriumno concept of future Purposive: goaldirected 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: excessdeficiency related to homeostasis eg food deprivation and pain which lead to behavioural actions, but also vitaminoxygen deficiency which do not always stimulate behaviour. (eg. Lack of vitamin B) o Drive: can be the same as need, but always stimulates behaviour Hulls 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 welllearned. Increased drive potentiates all responses, so that interference between competing response becomes worsedecreased performance. High levels of drive will reduce performance
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