Research Methods and Causal Inference Quiz

Experimental research involves manipulation of variables, while naturalistic observation is an observational method.

Random assignment ensures unbiased group allocation, a key feature of RCTs.

Pilot studies help gather initial data to refine research methods and assess the feasibility of a larger study.

A research hypothesis offers a testable explanation for observed phenomena, guiding the research process.

A placebo is an inert substance or treatment given to control groups to account for psychological effects.

Regression to the mean is a statistical concept and not a threat to internal validity.

A control group helps assess the impact of the experimental treatment by providing a baseline for comparison.

Randomization minimizes bias in group assignment, ensuring groups are comparable at the start of an experiment.

Qualitative methods provide detailed insights into complex phenomena, allowing for a deep understanding.

IRB focuses on ethical considerations; participant recruitment is typically addressed in research protocols.

Regression analysis is used in observational studies to explore relationships between variables but doesn't establish causality.

Placebos help distinguish between the psychological effects of belief and the actual impact of an experimental treatment.

While randomization is crucial, it's not one of Bradford Hill's specific criteria for establishing causality.

Type I error occurs when a true null hypothesis is incorrectly rejected, leading to a false positive.