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Research Methods Test 2
12/6/10
34
Psychology
Undergraduate 4
12/06/2010

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Term
How would you define an experimental design?
Definition
A method for testing cause-effect relationships, The two essential groups are control and experimental
Term
When would you use a factorial design and what are your choices?
Definition
When there's more than one indepedent variable; mixed, between, within
Term
What 3 things should we consider of the dependent variable?
Definition
reliability, validity, sensitivity
Term
Characterize a between subjects design
Definition
2 seperate groups are being studied, more work for the experimenter and less for the participant
Term
Characterize a within studies design.
Definition
The subjects are being compared to themselves as the control group, more time for the participant, better data
Term
Annother word for independent variable
Definition
Factor
Term
2 types of info from a factorial design
Definition
Main effect, interactions
Term
Main effect
Definition
How each independent variable is affecting the behavior
Term
Interaction effect
Definition
The influence the variables have on each other
Term
Tell me everything about a 2x3x7 setup
Definition
3 main effects, interactions with the largest being 3, can tell the number of levels
Term
How would we identify where an interaction was happening on a graph?
Definition
Non-parallel lines
Term
Define a mixed design
Definition
Both within subject and between subject components
Term
What causes an order effect?
Definition
The sequence of treatments start to influence the performance of the subjects
Term
2 types of order effect?
Definition
Fatigue & practice
Term
What type of problem with an order effect?
Definition
Progressive error
Term
What is the best control for progressive error?
Definition
Counterbalancing
Term
What makes a small within-study unique? And what kind of design would you use?
Definition
You don't need statistics, ABA reversal
Term
What is the goal of counterbalancing?
Definition
A method that allows us to come up with different sequences of presenting our stimuli
Term
Problem with ABBA?
Definition
It becomes cumbersome when you have a lot of variables
Term
Cross-subjects counterbalancing options
Definition
Complete or partial
Term
Partial counterbalancing
Definition
: Using some select sequence, your choice. Choose enough to make it operational
Term
3rd type of counterbalancing; what's nice? What's most preferred?
Definition
Latin square, you select from a table to choose your best fit, balance (lack repetition)
Term
What's another problem with within subjects design and how to fix?
Definition
Carry over effect: when it continues affecting the subject after the experiment, carryout washout period
Term
How to control for variables
Definition
Limit variables, keep everything constant, and prevent background noise
Term
If there’s a subject preference and my IV isn’t associated you...
Definition
set the extraneous variable against the IV
Term
Control concern with quasi
Definition
Can't monitor all aspects and variables
Term
2 types of developmental research
Definition
longitudinal(within) and cross-sectional (between)
Term
Quasi-independent variable
Definition
A characteristic or trait or event that can be selected for, but not assigned
Term
Purpose of well constructed operational definitions
Definition
To increase precision, to increase likelihood of replication
Term
What's a control for subject traits?
Definition
Random assignment
Term
When using a reversal design
Definition
establish baseline, implement treatment, and then re-establish baseline
Term
Carry-over effect
Definition
: Function of IV, carry-over effects occur when treatment continues to influence behavior during a subsequent test session
Term
Yoked control
Definition
Uses an active participant; is in control of outcomes, its performance determines outcomes for it and the passive participant
Term
Demand characteristic
Definition
: cues the subject uses to guess at the hypothesis or desire of the researcher that then alter behavior accordingly
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