Chapter 6 Flashcards
Exploratory
Explore areas that not well understood
“What if”
Descriptive
To characterize, explain, or describe variables that are related to a specific group of individuals
“What is”
“ How”
Relational
Looking at relationships between variables
“Does”
“ Is”
Experimental Research Design
-used to determine cause and effect
-laboratory experiment
Lab setting
-field experiment
Natural setting in which behavior naturally operates
Strength: shows cause and effect
Limitation: results may not be the same in natural environment
Quasi-experimental research design
-similar to experimental, lacks control as random assignment is not possible or there is not control group
-Quasi independent variable
Cannot be manipulated
Strength: can study factors related to unique characteristics of participants
Limitation: cannot determine cause and effect
Non experimental research design
-make observations in which behavior/ event is observed “as is” or without intervention from researcher
Strength: can observe behavior as they naturally operate
Limitation: cannot demonstrate cause and effect
Internal validity
- the ability to rule out alternative explorations for results
- confidence in results
Threats to internal validity
-history effects
Unanticipated event that co-occurs with a manipulation in study
-maturation
Participants psychological and physiological
-testing effects
Improved performance on a test/ measure the 2nd time
-Instrumentation and measurement
Measurement changes due to an error during course of research
-attrition
Participant doesn’t show up or complete study
-environmental factors
External validity
How well results generalize to population or additional situations beyond manipulations or constraints of study
Threats to external validity
-population validity
Extent to which results observed will generalize to target population from sample
-ecological validity
Extent to which results observed will generalize across settings or environment (research settings)
-temporal validity
Timing of measurements
-outcome validity
Results observed will generalize across different but related DVS
How to make unobtrusive observations
1) remain hidden
2) habituate participants to researchers
3) use a confederate
4) use indirect measure (trash)