Triangulation involves combining different methods, sources, investigators or theoretical perspectives to cross-check findings. When similar results emerge from diverse lines of evidence, confidence in the conclusions increases. This strategy is especially valued in qualitative research but can be used in mixed methods as well. Thus, the practice described in the stem is called triangulation.
Option A:
Standardisation refers to applying consistent procedures and instructions across participants, which reduces variability but does not necessarily involve multiple sources of evidence.
Option B:
Randomisation is a technique for assigning participants to groups or selecting samples by chance to control bias; it is distinct from corroborating results with multiple approaches.
Option C:
Triangulation might include, for example, combining interviews, observations and document analysis to study classroom interaction. If all three sources point to similar themes, the findings are considered more credible. This multi-angle confirmation is exactly what the stem highlights, making this option correct.
Option D:
Stratification refers to dividing a population into subgroups for sampling and does not inherently involve using multiple methods to study the same phenomenon.
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