Ensuring credibility
IB Psychologyยท Research methodologyยท 11 min read
1. Core concept
Credibility is the trustworthiness of research โ how far its conclusions genuinely reflect reality rather than artefacts of method or bias. Researchers strengthen it with concrete strategies: triangulation (combining methods, data sources or investigators), reflexivity, member checking (asking participants whether an interpretation rings true), prolonged engagement, and clear, replicable procedures. The more independent lines of evidence converge, the more credible the conclusion.
2. Key studies
IB Psychology answers must be supported by named studies. Learn these to cite as evidence:
Cialdini (1984)
Cialdini spent three years undercover observing real-world persuasion to formulate six key principles of compliance. โ Method triangulation โ immersive field observation combined with the later controlled tests of these principles โ makes the resulting conclusions more credible than either method alone.
3. Evaluation (AO3)
Strength โ convergence beats a single source โ Triangulation and member checking catch method-specific errors, so agreement across independent sources is stronger evidence than any one study.
Limitation โ costly and not foolproof โ These strategies demand time and resources many studies lack, and convergence can still reflect a shared bias rather than the truth.
4. Scope
5. Common Pitfalls
Wrong move:
One well-chosen quotation, or a single method, makes a qualitative study credible.
Why:
A frequently penalised misconception in IB Psychology exams.
Correct move:
Credibility comes from deliberate strategies โ triangulation, member checking, reflexivity, transparent procedure โ not from a persuasive quote. Convergence across independent sources is the point.
Going deeper
- Reflexivityreflexivity is one credibility strategy (RM_8).
- Transferability and credibilitycredibility underpins transferability (RM_9).