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CSU - PSY 320 - Class Notes - Week 5

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CSU - PSY 320 - Class Notes - Week 5

School: Colorado State University
Department: Psychology
Course: Abnormal Psychology
Professor: Martha Amberg
Term: Fall 2016
Tags: PSY320, Amberg, Psychology, and abnormalpsychology
Name: PSY 320 Week 4 Notes
Description: Lecture notes for week 4 Prof Amberg DSM, types of studies, PTSD
Uploaded: 09/16/2016
0 5 3 19 Reviews
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background image 9/12/16 
Diagnostic and Statistical Manual of Mental Disorders 
­ DSM  ● Categorized recognized disorders 
● Vague descriptions heavily influenced by psychoanalytic theory (freud) 
­ DSM­II  ● Included more disorders, still had pretty vague descriptions  ­ DSM­III, DSM­IIIR, DSM­IV, DSM­IV­TR  ● Replaced vague descriptions with specific concrete criteria  ­ DSM­V  ● Incorporated a continuum or dimensional perspective  ○ Ex: autism spectrum ­ not black and white, somewhere on the spectrum 
○ Ex: may not be schizophrenic, but could still have schizophrenic 
tendencies   
Chapter 4 
 
Scientific Method 
­ Defining problem/stating hypothesis  ● Hypothesis ­ predictive statement 
● Null hypothesis ­ predict no difference or opposite outcome 
­ Select research methods  ● Variable ­ Factor or characteristic that can vary among samples 
● Dependent variable ­ Measured factor 
● Independent variable ­ Factor that can affect a dependent variable, the 
manipulated variable  ­ Collect and analyze data  ­ Make conclusions and document results   
Ethical Issues in Research 
­ Understanding the study  ­ Confidentiality  ­ Participants have to know that they have the right to refuse or withdraw participation  ­ Experimenters have to acquire informed consent from participants  ­ Deception ­ have to be careful with this, deception can be used but no more than 
necessary 
● Joining 
● During 
­ Debriefed at the end of the study ­ explain to participants what the study was about, 
clear up any deceptions if deception was used 
 
Case Studies 
­ Detailed history 
background image ­ Single individuals to make general inferences  ­ Study rare problems  ­ Cannot be generalized ­ may just apply to special cases  ­ Lack objectivity  ­ Ex: Phineas Gage ­ brain injury that changed his personality   
Correlational Research 
­ Variables measured to see if they COVARY  ­ No variables are manipulated, just measured  ­ Hypothesis predicts how variables are related (like whether they will be positively 
correlated or negatively correlated) 
 
Correlation Coefficient 
­ Relationship between variables  ­ ● Falls between ­1.00 and +1.00 
● Positive correlation coefficient ­ variables change in the same way (both increase 
or both decrease)  ● Negative correlation coefficient ­ variables change in opposite way (one  increases, other decreases)   
Statistical Significance 
­ How likely a result is due to chance  ­ Statistical and clinical significance are not necessarily equivalent   ● Statistical is usually significant if chance of error is <5%, clinical is usually  significant if chance of error is <1%   
Evaluating Correlational Studies 
­ Advantages  ● External validity ­ generalizes to real life  ­ Disadvantages  ● Time consuming 
● Not indicative of cause and effect 
● Third variable problem ­ other factors that could have accounted for the 
correlation  ○ Ex: someone got a better grade on the test because they were interested  in the topic, not necessarily because they studied more   
Epidemiological Studies 
­ Study of frequency and distribution of a disorder  ● Prevalence ­ proportion of the population 
● Incidence ­ occurrence within a specified period of time 

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School: Colorado State University
Department: Psychology
Course: Abnormal Psychology
Professor: Martha Amberg
Term: Fall 2016
Tags: PSY320, Amberg, Psychology, and abnormalpsychology
Name: PSY 320 Week 4 Notes
Description: Lecture notes for week 4 Prof Amberg DSM, types of studies, PTSD
Uploaded: 09/16/2016
6 Pages 49 Views 39 Unlocks
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