Research Methods & Evidence-Based Practice Flashcards
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A tutor wants to determine whether a new vocabulary strategy is effective. Which research design best establishes cause and effect?
Answer: Randomized controlled trial
A randomized controlled trial randomly assigns participants to groups, allowing causal conclusions about the intervention's effect.
Which term describes the extent to which a study's findings can be generalized to other students and settings?
Answer: External validity
External validity refers to how well study results apply beyond the specific sample and setting studied.
A tutor reads a meta-analysis on reading fluency interventions. What is a key advantage of meta-analyses over single studies?
Answer: They use larger, combined sample sizes for stronger conclusions
Meta-analyses pool data across multiple studies, increasing statistical power and yielding more reliable effect size estimates.
When a measurement tool consistently produces similar scores across repeated administrations, it demonstrates:
Answer: Test-retest reliability
Test-retest reliability measures the consistency of scores obtained from the same instrument at different time points.
A tutor notices that students who received phonics instruction outperformed controls, but the control group had less experienced teachers. This is an example of:
Answer: A confounding variable
Teacher experience is a confounding variable that co-varies with the intervention and could explain the outcome independently.
In evidence-based tutoring practice, the hierarchy of evidence places which source at the highest level of credibility?
Answer: Systematic reviews and meta-analyses
Systematic reviews and meta-analyses synthesize the best available evidence and are considered the gold standard in evidence hierarchies.
A researcher uses a Likert scale to measure student motivation. This is an example of collecting:
Answer: Ordinal data
Likert scales produce ordinal data because response categories are ranked but intervals between them are not necessarily equal.