Applied Methods and Techniques Flashcards

Which approach to observational data collection involves the researcher taking part in the group's activities while observing?

Answer: Participant observation

In participant observation, the researcher engages in the setting while systematically observing.

Cronbach's alpha is used to assess which property of a multi-item scale?

Answer: Internal consistency

Cronbach's alpha estimates how closely related a set of items are as a group.

A research assistant collects data on a cohort at baseline and then every year for five years. This is a:

Answer: Longitudinal study

Longitudinal studies repeatedly measure the same participants over time.

When measuring a participant's height with a stadiometer, which practice most improves measurement precision?

Answer: Taking repeated measurements under standardized conditions and averaging

Repeated standardized measurements reduce random error and improve precision.

Which type of question is best for capturing rich, unanticipated participant perspectives?

Answer: Open-ended question

Open-ended questions let participants answer in their own words, revealing unexpected themes.

Using multiple data sources or methods to cross-check findings in qualitative research is called:

Answer: Triangulation

Triangulation strengthens credibility by comparing findings across sources, methods, or investigators.

A scale consistently reads 2 kg heavier than the true weight. This is an example of:

Answer: Systematic error (bias)

A consistent, directional deviation from the true value is systematic error, which calls for calibration.