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Experimental, Quasi-Experimental, & Exploratory Research Design (weeks 8, 10, & 11)

OTD 8262: Research Design
by

Rick Davenport

on 11 November 2015

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Transcript of Experimental, Quasi-Experimental, & Exploratory Research Design (weeks 8, 10, & 11)

Part Two: Exploratory Research Design [Slides 55-92]
EXPERIMENTAL
EXPLORATORY
Find Relationships
DESCRIPTIVE
OTD 8262 Research Design
Fall Semester
Prezi for Weeks 8, 9, & 10
Cause and Effect
Randomized Control Trials/ True Experiments
Quasi-Experiments
Cohort Studies
Case-Control Studies
Please read through this PDF
which reviews exploratory, descriptive, and causal (cause & effect) research designs.
Correlational
Research
Predictive Research
Methodological Reliability
Research Validity
TYPES OF RESEARCH
Chapter 9 keynotes:
Upon reading this Portney & Watkins chapter be sure to know these important concepts and terms:
What is Random Assignment?
What design strategy effectively rules out extraneous effects in experimental research?
What is the difference between double & single-blind studies?
What are the strategies for dealing with extraneous variables? (tip table 9.1)
What is the statistical technique called analysis of covariance (ANCOVA)?
What are some of the threats to Internal Validity? (e.g. History, Maturation, Attrition, Testing, Instrumentation, Regression toward the mean)
What was the lesson learned in the Mr. Fit study?
Chapter 10 keynotes:
Upon reading this Portney & Watkins chapter be sure to know these important concepts and terms:
Clinical trial
What are the 'Trial Phases in investigational studies'?
Watch this short 2min. video to reinforce your understanding of trial phases in investigational design:



What is considered the 'gold standard' of true experimental designs?
Between-subjects
and
randomized block designs
(what are the other names for these designs?)
Watch these short <6min. videos to reinforce your understanding of a
between-subjects & within-subjects
design:



Single-Factor Design (
one-way design
)
pretest-posttest control group design
two-group pretest-posttest design
multigroup pretest-posttest design
posttest-only control group design
Review this 11min. video on common research designs. Please note that when the speaker in the video mentions "
nonequivalent group
" it is the same as saying "
quasi-experimental group
"
(Quasi-experimental design is
covered in Chp 11 or Portney &
Watkins)
Describe Populations
Multi-Factor Designs for Independent groups
two-way factorial design
three-way factorial design
After re-reading the section of the chapter re: Factorial design please reinforce the material with the 5 page document below as well as the 13min. video.
Know the term one-way design or single-factor design
Now watch this 14min. video that should be review however it will make sure you are on the same page regarding research design and items covered in the first part of the course.
Know the terminology Between-subjects design (completely randomized designs) and Within-subjects design (repeated measures design)
Know the term factorial design
Know the term "level" in regards to levels of independent variables
What does "2 x 2 x 3 factorial design" mean? (in regards to IVs, levels, & groups/conditions)
Main effect
Interaction effect

Repeated Measures Design
Single-Factor Designs for repeated measures
one-way repeated measures design
repeated measure design
within-subject design
Independent group design
Matched pairs design
Order effect
Crossover design
Watch this 5min video the 1st part is good review -repeated measures is covered in the 2nd part.
Crossover Design
Items not responsible for on the next Quiz
Nested design
Sequential Clinical Trials
Stopping Rules

Chapter 11 keynotes:
Upon reading this Portney & Watkins chapter be sure to know these important concepts and terms:
Quasi-experimental design
one group designs
one-group pretest-posttest design
one-way repeated measures design over time
Time series design
multi-group designs
nonequivalent pretest-postest control group design
nonequivalent posttest-only control group design


Chapter 13 keynotes:
End of Part One
Part One: Experimental & Quasi-Experimental Research Designs [Slides 1-53]
Upon reading this Portney & Watkins chapter be sure to know these important concepts and terms:
Remember this chapter deals with research designs that are exploring to see if they can 'find relationships' (versus cause & Effects)

Chapter 13
Chapter
10 & 11
Exploratory Research: Observational Designs
Be good to know this analogy
Observational research
Descriptive research
Exploratory research
prospective research
retrospective research
Why are prospective studies more reliable?
longitudinal studies
How is internal validity vulnerable?
cross-sectional studies
Is this efficient study design?
Cohort effects?
Correlational study


Remember this gentlemen Darrin Campen? he gives a good review on correlation
Here is a good review - pay attention to the predictive research design section to be sure you understand the concept
After reading this section on Case-control studies in the chapter please review this video to help you understand the concepts
While watching be sure you understand:
cases vs. controls
what are some of the design issues: case definition, case selection, selection bias,
You will not be held to his description of ...what the 'Modern Description' of Case Control studies are. AND only if you have time ...please watch the final 10min of the video. but this portion of the video will not be quizzed
After reading this section on Cohort studies in the chapter please review this video to help you understand the concepts
While watching be sure you understand:
Unique features of cohort studies e.g. follow up over time
versus RCT, case-study, etc.
End of Part 2
Full transcript