A training manager is concerned with whether the results of training are based on application of learned skills or some other external/internal variable. Which type of data collection design would address these concerns?

A) pre-post
B) post only
C) time series
D) time series with control group

Time Series with Control Group

A research design that tracks changes over time with the inclusion of a control group to account for external variables, allowing for more accurate causal inferences.

Data Collection Design

Involves planning the process of gathering and measuring information on variables of interest, in an established systematic fashion that enables one to answer stated research questions, test hypotheses, and evaluate outcomes.