Exam 2 Flashcards
What is a control group?
In experementation, a group of subjects to whom no experiemental stimulus is adminitered and who should resemble the experimental group in all other respects. The comparasion of the experimental and control group and the end of the experiement points to the effect of the experimental stimulus
What is a double bind experiement?
An experimental design in which neither the subjects nor the experiementeres know which is the experiemental group and which is the control grpups
What is an experimental group?
In experimentation, a group of subects th whom an experimentl stimulus is administred
What is external validity?
Refers to the possibility that conclusions drawn from the experiments results may not be generalizable to the “real” world
What is internal validity?
Refers to the possibility that the conclusions drawn from the experimental results may not accurately reflect what went on in the experiment itself
What is Matching?
In connection with experiments the procedure wherby pairs of subjects are matched on the basis of their similarities on one or more variables and one member of the pair is assigned to the exper group and the other the control group
Wat is posttesting?
The remeasurement of a DV among subjects after theyve been exposed to an IV
What is Pretesting?
The measurement of a dv among subjects
What is randomization?
A technique in which experimental subkects are randomly assigned to either the experemental or control group randomly
In a classical experiment the three major components are what?
IV and DV, pre and post testing, experimental and control groups
What are the 12 parts of internal vlidity?
History Maturation Testing Intrumentation Statistical regressionm Selection Bias Experimental Mortality Causal time order Diffusion or immitation of treatments Compensation Compensatory rivalry Demoralization
What are natural experiments
Natural experiments are experements observed and analyzed after a naturalk disaster happens or a social/political decisaion is put in place
What are web based experiments
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What is a One-shot case study?
a single group of subjects is measured on a dependent
variable following an experimental stimulus.
What is a One-group pretest-postest design
Pre-test à Intervention à Post-test lacks a control group.
What is a Static Group comparison?
includes experimental and control groups, but no pretest.
What is Probablility sampaling?
The process which by people are selected from a sampling frame which is of the whole pop and selected randomly for the study
The drawback of prob sampling in social science studies though is that you should ot use it for studies involving less than 100 people which social scientist experiments _____ have?
Rarely
What are the arguments in relation to Randomization over matching?
- We may not know the variables to match in advance
2. Most statistics used to analyze results of experiment assume randomization
When would matching be good?
With fewer subjects
What is Generazablility?
The info drawn from an experiment tha should be generalizable to the whol population
What is the problem related to the classical expireiment and external validityu?
The pretest might have aninfluence over the subjects responses during the postest. iE muslim stereotypes shown before and after stimulus
What are the primary strengths of the expiremental method?
The isolation of the experimental variables impact over time, little time, money, requires less participants
What are the weaknesses of the experimental method?
Artificiality,social processes that occur in a labrotory might not necesarrily hold true for those in natural environments
In relation to Internal validity, what is, History?
During course of study, historical events may occur that confound expiremental results
In relation to Internal validity, what is, maturation?
People are continually growing and chaning, may affect expirement
In relation to Internal validity, what is,Testing?
Testing and restesting c an influence peoples behaviors
In relation to Internal validity, what is, Intrumentation
If we use different measuresof the DV in pretrest/posttest how can we be sure theyre equivalent to each other
In relation to Internal validity, what is, Statistical regression?
Extreme scores are more likely to move towards the mean after contuinual tests
In relation to Internal validity, what is, Selection Bias?
Assigning subjects to expirement and control geroup in a biases way. Comparisons have no meaning unless groups are comparable at begin of expirement
In relation to Internal validity, what is, experimental mortality?
Expereimental subjects dropping out of the experiment
In relation to Internal validity, what is, Causal time order?
Ambiguity about time oprder of experimental stimulus
In relation to Internal validity, what is, Diffusion of treatments?
When experimental or control groups can communicate with one another
In relation to Internal validity, what is, Compensation?
Compensating for the feeling os sympathy towards the control group for not recieving the stimulus
In relation to Internal validity, what is, Compensatory rivalry?
Subjects may try to compensate for missing stimuls
In relation to Internal validity, what is, Demoralization?
Feelings of deprivation inc control group may illicit anger or disinterest in the experiment altogether.
What is a respondant?
A person who provides data for analysis by responding to a survey questionaire
How cans ureys be used for descriptivfe purposes?
Show attitudes or opinons (think presidential polls
How can surveys be used for explanatory research?
Using a survey during a pre/ post test to see if it had an influence on the subject
How can surveys be used for Exploratory research?
By asking lots of open ended questions to provide us with a multitude of answers
What are open ended questions?
Questions in which the respondant is asked to provide their own answers
When are open ended question heavily used?
In depth qualitative research
What are clsed ended questions?
Survey questions in which respondant is asked to select from a list errected by the researcher
When are closed ended questions most likely to be used?
More p[opular insurvey research becaus eit provides uniformity
What are he two essential components of closed ended questions that provide the best results?
- exahustive
2. answer categories must be mutally exclusive
What are the 8 guidelines for asking effective questions?
- select approprriate question forms
- make items clear
- Avoid double barrel qustions
- Respondents must be compentent to answer
- Respondents must be willing to answer
- Questions should be relevant
Avoid negative items
Avoid Biased ityems and terms
In relation to the 8 guidelines for asking questions Make Items Clear more specifically refers to?
Make items clear and unambigious (what do you think about proposed peace plan is bad)
In relation to the 8 guidelines for asking questions Avoid double barrel questions more specifically refers to?
Not conflating two questions into one (do you live near fresh and healthy food)