– Essay 1 Page 1 of 4 1 2 3 Compare behaviourist and cognitive explanations of learning, using evidence and examples from both fields. 4 In order to compare behaviourist and cognitive explanations of learning it seems crucial that 5 both should be described first and a little history given. This essay will focus initially on how 6 both schools of thought came about and how both have developed over the years before 7 moving on to compare and contrast the two explanations of learning. 8 9 Behaviourism developed at the beginning of the 20th century whereas cognition came later 10 between the 1950’s and 1970’s. Behaviourism developed because psychologists were 11 frustrated with the state of psychology at the time. They felt particularly constricted by the 12 continuous use of the introspective method, which in their view did not allow them the 13 freedom to adopt objective and effective research. They wanted psychology to become a 14 respected true science and developed the idea that only observable behaviour should be 15 measured rather than the mental workings behind them (Hayes, 1978). Psychologists such as 16 Pavlov and Skinner have played a major part in the development of behaviourism. The 17 research and findings of both of these psychologists will be discussed later in the essay. 18 19 Just as behaviourists had felt constricted by the position of psychology during the early 20th 20 century so too did psychologists during the 1960’s feel unhappy with the narrow viewpoint of 21 the behaviourists. Psychologists began to think that it was impossible to explain human 22 behaviour based purely on observable events. They believed it was vital to include the human 23 mind to be able to understand how humans perceived the world around them (Rathus, 2001). 24 This desire to studying the mind brought about the ‘cognitive revolution’ in the 1960’s when 25 scientists in other fields began investigating mental processes (Hunt, 2001). 26 27 A black box model can be used to illustrate the key difference between behavioural and 28 cognitive psychology. The black box is viewed as the human being or the mind, which 29 receives inputs (stimuli) and emits outputs (responses). Behaviourists believe that the black 30 box cannot be opened and should be ignored, and that objectively observing the inputs and 31 outputs outside of the box is far more important. Cognitive psychology, on the other hand, is 32 concerned with both looking inside the black box as and observing the inputs and outputs. 33 34 In 1927 Pavlov discovered that reflexes could be learned or conditioned. In his famous study 35 of classical conditioning using, he found that dog would salviate at unexpected times even – Essay 1 Page 2 of 4 36 before food had been placed in their mouth. A dog presented with food (unconditioned 37 stimuli- US) will per reflex start to salivate (Unconditioned Response -UR). However, he 38 showed that when pairing the food (unconditioned stimulus) with a neutral stimulus such as a 39 bell (US), the bell would eventually become a Conditioned Stimuli (CS) which on its own 40 cause salivation (Conditioned Response, CR). 41 42 Classical conditioning has become a universally accepted theory of learning but behaviourist 43 and cognitive psychologists would explain this concept in different ways. Cognitive 44 psychologists would suggest that classical conditioning is a simple method of learning 45 relationships that link events. They say that organisms interpret all the data then process it in 46 order to make predictions and decisions. Therefore, the dog heard the bell and mentally 47 connected it with the arrival of the food. In essence the bell provided information to the dog 48 about what was going to happen next. Behaviourists would argue that the dog did not ‘know’ 49 that the food was on its way. The dog only salivated because the bell had been paired with the 50 food – because it the bell and the food were contiguous. The view that all living beings learn 51 to associate stimuli because they are contiguous is a key behaviourist explanation of learning. 52 53 However, research by Garcia and Koelling (1966) on taste aversion challenges this 54 behaviourist view. Garcia et al conditioned two groups of rats with three stimuli – sweetened 55 water, a light and a clicker. One group was then presented with an unconditioned stimulus of 56 nausea caused by poison or radiation while the other group was presented with an 57 unconditioned stimulus of an electric shock. Following this conditioning, the rats that had 58 been nauseated showed aversion to the sweetened water but showed no aversion to the light 59 or the clicker. The other group of rats who had been shocked showed an aversion to the light 60 and the clicker but not to the sweetened water (Rosenzweig, Breedlove & Leiman, 2002). 61 Although both groups of rats had been exposed to all three stimuli and each one could have 62 been thought of as the cause of the painful shock or the nausea, the rats associated the pain or 63 the nausea with the most appropriate source. This finding shows some kind of logical thought 64 process behind the aversion – not simply a behaviour following a stimulus. The rats paired the 65 nausea or the pain with the most obvious cause not just because it was contiguous. 66 67 The difference between behaviourism and cognitive schools of thought can also be shown in 68 operant conditioning. Skinner provides the well-known example of operant conditioning. He 69 set up an animal cage where a rat was placed inside and deprived of food until eventually it – Essay 1 Page 3 of 4 70 learned by accident that pressing a lever released a food pellet into the cage. The food was 71 termed a positive reinforcer and encouraged the rat to press the lever again. If pressing the 72 lever had led to something bad such as a shock the rat would avoid pressing it again because 73 the effect would have been negative hence the term negative reinforcer. 74 75 Behaviourists would view operant conditioning as a simple form of learning whereby 76 behaviour can be controlled by the positive or negative effect it has. Although the terms 77 reward and punishment are often used synonymously with the terms negative and positive 78 reinforcers Skinner disliked the idea of these terms because he believed that they (reward and 79 punishment) suggested trying to look inside the black box of an organism which is strictly 80 against the behaviourist viewpoint. Cognitive psychologists would say that a human forms an 81 idea or belief about things that are wrong or right through experience and conscious decisions 82 to repeat or not to repeat a certain type of behaviour depending on what type of effect it had 83 last time. Cognitivists would argue that behaviour is learned by knowledge of what is 84 appropriate and is not as suggested by behaviourists simply a learned automatic response. 85 86 During the time when behaviourism was the key concept in psychology Tolman was 87 conducting experiments showing how complex cognitive processes were taking place even in 88 the minds of rats. His study involving rats looking for food in a maze made him conclude that 89 the animals were developing a set of spatial relationships – cognitive ‘maps’ rather than just 90 learning a chain of responses (Hock, 2002). Tolman believed that far more could be 91 understood about the nature of learning through examining internal mental process as well as 92 the observable stimuli and responses. 93 94 Classical and operant conditioning are considered to be relatively basic explanations of 95 learning. Much of conditioning’s attraction is that it meets the behaviourist viewpoint in that 96 it can be measured and explained objectively using in most cases laboratory conditions. 97 However, many psychologists find that conditioning is far too mechanical and lacks quality 98 when trying to explain all learning processes (Hayes, 1978). Cognitive psychology is guided 99 by developments in a number of different fields from Psycholinguistics to Anthropology. 100 Behaviourism has contributed a great deal to psychology especially to the study of learning, 101 for example Skinner developed an educational method called programmed learning in which 102 difficult tasks are broken down into simple steps, each of which is reinforced. Yet it could be 103 said that behaviourism neglected to research things that involved complex thought processes – Essay 1 Page 4 of 4 104 such as language acquisition and problem solving (Hayes, 1978). Cognitive psychologists 105 have contributed such concepts as mental structures and templates. Cognitive Psychologists 106 such as Asch have played a huge part in our understanding of the human mind with concepts 107 such as schemas upon which now rests the foundations of cognitive psychology. 108 109 In conclusion, both behaviourist and cognitive schools of thought have played a major part in 110 our understanding of how organisms learn. However, both have their limitations. 111 Behaviourism, through concentrating solely on observable behaviour, lost much of its 112 relevance to human problems and is sometimes condemned for its triviality. Cognitive 113 psychology has been criticised for neglecting the role of emotions in human learning and 114 behaviour but at least cognitive psychology recognises the need to look inside the black box 115 in order to be able to understand how organisms function and learn. 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 Reference List. Anderson, J. R (2000) Learning and Memory – An Intergrated Approach. New York, USA: John Wiley & Sons Baddeley, A (1997) Human Memory – Theory and Practice. Sussex: Psychology Press Hayes, J. R (1978) Cognitive Psychology – Thinking and Creating. Illinois, USA: The Dorsey Press Hock, R. (2002) Forty Studies that Changed Psychology. New Jersey, USA: Prentice Hall Hunt, M. (1994) The story of psychology. New York: Anchor Books. Rathus, S (2001) Essentials of Psychology Orlando, USA: Harcourt College Publishers. Rosenzweig, M. Breedlove, M. & Leiman, A (2002) Biological Psychology Sunderland, USA: Sinauer Associates