In the ‘When Prophecy Fails’ study, disconfirming truth did not shatter belief but instead made heavily invested believers more committed, not less.

Evidence

Leon Festinger - Cognitive Dissonance, Social Psychology, Theory (Britannica)

corroborated: 2 independent passages support this claim
XREF: connects to: A deliberately insulated peace can be shattered instantly by a single intrusive truth — Julien Gracq, Balcony in the Forest, 88; Trust is a faith-like commitment, not mere cognitive calculation — Anthony Giddens, The Consequences of Modernity, 73

Cognitive dissonance strengthens rather than weakens false beliefs under contrary evidence (similarity 0.82)
Disconfirming evidence can strengthen rather than weaken committed beliefs. (similarity 0.81)
Disconfirming evidence rarely topples deeply held doctrines and worldviews. (similarity 0.81)
Disconfirmed prophecies get reinterpreted rather than abandoned when believers are invested (similarity 0.80)
Confrontation with contrary evidence can intensify rather than weaken firm belief. (similarity 0.80)
The printing press replaced cosmological symbolization with questions of confidence and trust (similarity 0.79)
Confirmation bias cements both reputations and habitual trust (similarity 0.78)
Trust requires belief in the other’s motivations, not mere behavioral expectation (similarity 0.78)
Trust is defined by the reason for expectation, not the expectation itself (similarity 0.78)

Trust is a faith-like commitment, not mere cognitive calculation #expands (0.82) — Anthony Giddens, The Consequences of Modernity, 73