Textbook Notes (367,974)
Canada (161,538)
Psychology (4,882)
Rod Martin (26)
Chapter 2

Chapter 2.docx

10 Pages
Unlock Document

Psychology 2310A/B
Rod Martin

Chapter 2 Theoretical Perspectives on Abnormal Behaviour Levels of TheoriesSingle factor explanationsone factor is said to cause the disorder such as a genetic defect or a traumatic experience o Usually reflects the primary focus of the researcher rather than a belief in a single causeInteractionist explanationsbehaviour is the product of the interaction of a variety of factors o Identifies risk factors rather than specific causes more complex theoriesScientific theories are judged to be valuable because they contain three essential features o They integrate most of what is currently known about the phenomena in the simplest way possible parsimonious o They make testable predictions about aspects of the phenomena that were not previously thought of o They make it possible to specify what evidence would deny the theoryTheories are not set up to prove the worth of a theory but rather to reject or fail to reject the null hypothesisNull hypothesis proposes that the prediction made from the theory is falseTheories gain strength when alternative explanations are rejected theories are not facts they are the best approximation we have at any moment so as knowledge accumulates old theories are usually replaced Search for CausesGeneral aims of theories about mental disorders are to o Explain etiology causes or origins of problem or behaviour o Identify the factors that maintain the behaviour o Predict the course of the disorder o Design effective treatmentsFactors involved in the etiology of the problem may not be relevant to its maintenance o Ex get attacked by a dog so develop a phobia but maintain phobia by avoiding them o Even if there is a clear biological cause environmental manipulations can increase or decrease prevalence of disorder Biological Models Role of the Central Nervous SystemBrain is estimated to have 100 billion neurons and thousands of billions of glia cellsCells group together in to concentrated areas which appear to have distinctive functionsHindbraindirects functioning of the autonomic nervous system which controls primary internal activities such as digestion cardiovascular functioning and breathing
More Less

Related notes for Psychology 2310A/B

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.