Drive Reduction Theory, Slides of Personality Psychology

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Drive Reduction Theory

( C.Hull ) Center of instructional Technology & multimedia { CITM } By : Mohammed I. A. Alasttal P-QM0016/

Contents

Introduction

Biography

Postulates

Conclusion

Overview

Introduction (cont.)

Hull in later years decide to rename his drive reduction theory

to be called Drive stimulus reduction theory , to emphasize the

reduction or complete Removal of stimuli elements from the

drive that occurs upon the organism Completing a correct

response sought after on the part of the experimenter.

Hull believed that human behavior is a result of the constant

interaction between the organism and its environment. The

environment provides the stimuli and the organism responds.

Introduction (cont.) According to theory this case described by Miller & Dollard (1941): A six year old girl who is hungry and wants candy is told that there is candy hidden under one of the books in a bookcase. The girl begins to pull out books in a random manner until she finally finds the correct book (210 seconds). She sent out of the room and a new piece of candy is hidden under the same book. In her next search, she is much more directed and finds the candy in 86 seconds. By the ninth repetition of this experiment, the girl finds the candy immediately ( seconds). The girl present a drive for the candy and looking under books represented her responses to reduce this drive. When she eventually found the correct book, this particular response was rewarded, forming a habit. On subsequent trials, the strength of this habit was increased until it became a single stimulus-response connection in this setting.

Biography (Time line) 1884 Hull was born 1918 Received Ph.D. from University of Wisconsin 1918 publication of the literature on tests and measurements 1918 Becomes research Professor at Yale 1930 Hypnosis and Suggestibility , published 1940 Mathematico - Deductive Theory of Rote Learning: A study in Scientific Methodology was published. 1940 Principles of Behavior was published 1951 The Essentials of Behavior was published 1952 A Behavior System was published 1952 Hull died

Researches ● Doctoral research on "Quantitative Aspects of the Evolution of Concepts" was published in Psychological Monographs. ● An analytical study of the effects of tobacco on behavioral efficiency. ● Principles of Behavior( 1943 ), which presented a number of constructs in a detailed Theory of Behavior , became the most cited psychologist. ● Mathematico-Deductive Theory of Rote Learning ( 1940 )

Watson’s rejection of unobservable events inside the organism (body and brain) was unscientific , hull believed. Hull proposed that since we cannot observe the mediating events inside the organism, it does not mean that they do not exist. Mediating events Stimulus Response Organism Example : Hunger as Mediating Event Hunger can be defined as feeling of emptiness or the sensation of “pangs” in the stomach. An operational definition of hunger is, number of hours of food deprivation. This definition of hunger is quantifiable. Overview (Cont)

Operationally defined mediating events, like hunger are intervening variables that reside in the organism and are caused by factors like food deprivation, thus they can effect behavioral change like learning. Later Hull totally agrees with Watson in stating that these intervening variables are not mind or mental events. Thus (mental) feeling of “hungriness” was not important to Hull, but hunger as food deprivation was, because it could be measured and tested to explain behavior, after that defined ( neobehaviorism ) Overview (Cont)

HULL THEORY IN EDUCATION

Drive : the learner must want something Cue : the learner must attend to something Response : the learner must do something Reinforcement : the learner’s response must get him/her something that he or she wants Drive Cues Response Reinforcement Overview (Cont)

Principles:

1. Drive is essential in order for responses to occur (i.e., the student must want to learn).
2. Stimuli and responses must be detected by the organism in order for conditioning to occur ( i.e., the student must be attentive).
3. Response must be made in order for conditioning to occur (i.e., the student must be active).
4. Conditioning only occurs if the reinforcement satisfied a need (i.e, the learning must satisfy the learner's wants). Overview (Cont)

Postulate 2: Impulses Interact Each organism is bombarded by many stimuli and thus many sensory traces are generated. These traces interact with one another, and represent complexity of stimulation. Postulates

Postulates Postulate 3 : Unlearnt Behavior Organisms are born with hierarchy of unlearnt responses. Unlearnt behaviors are triggered first when the need arises. If these behaviors fail organism learns new behaviors to reduce the need.

Reference http://www.newworldencyclopedia.org/entry/Clark_L._Hull#Clark_Hul l. 27 s_Students: The_Neo-Hullians http://www.muskingum.edu/~psych/psycweb/history/hull.htm#Biogr aphy David C. Leonard, ( 2002) Learning theories, A to Z , Greenwood Publishing Group http://lilt.ilstu.edu/vfdouga/P418%20learning%20theories/New_Fol der/Lecture%20%2010Clark%20Leonard%20Hull.pps

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