Components of Research Articles
Threats to Internal Validity
Quantitative Study Design
Sampling
100

Compilation of previous studies

What is the literature review

100
Subjects lost to follow-up

What is mortality?

100

The name for classic experimental design

What is two group pre-test post-test?

100

Researcher handpicks participants for study

What is purposive sampling?

200

Interpretation of results and ways results contribute to knowledge

What is the discussion?

200

Changes in the way a variable is measured

What is instrumentation?

200

Experimental design with four groups of participants

Solomon Four Group Design

200

Selection of every "K th" person at fixed intervals

What is systematic sampling?

300

Description of sample and data collection techniques

What is the methods section?

300

Pretest influences the way participants respond on post test

What is testing?
300

Explains degree and characteristics of relationships between variables

What is descriptive correlation?

300

Successive random sampling of units that progress from large to small

What is multistage or cluster sampling?

400

Description of methods used to analyze data

What is the results section?

400

Changes in the way variable is measured

What is instrumentation?

400
Comparison of two groups; one with the disease and one without

What are case-control studies?

400

Choose most readily accessible persons for the study

What is convenience sampling?

500

Synopsis of the study

What is the abstract?

500

Variable is influenced by an event outside the study

What is history?

500

Compare disease development among two groups; one with risk factor, other without risk factor

What are cohort studies?

500

Population in subgroups and participants randomly selected from each subgroup

What is stratified random sampling?

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