Psychometric Characteristics and Cultural Interpretation of LOTCA Visual Subtests Among Adults in Taiwan.

Hong Kong journal of occupational therapy : HKJOT · 2026 · Other · OT
Chia-Hui Hung, Ling-Jie Hung, Wan-Yi Hung, Shih-Chen Fan, Hsiao-Ping Chiu

LOTCA visual subtests didn't work as designed in 101 cognitively intact Taiwanese adults. A low score on these tasks may mean the person doesn't recognise the object, uses a different word for the shape, or builds differently — not that their thinking is impaired.

Key findings

1

The seven LOTCA visual subtests showed poor internal consistency (VP α = .35, VC α = .49), and the factor structure did not reproduce the original VP and VC domain split.

2

Expert content validity was modest: S-CVI/Ave was .56 for VP and .71 for VC, both below the .90 threshold the authors set as their adequacy criterion.

3

After Bonferroni correction, age was significantly associated with Shape Identification and Reproduction of a Two-Dimensional Model performance (both in the negative direction), and gender was significantly associated with the latter, with males scoring higher.

MethodologyResultsClinical Relevance

Single-blind randomized controlled trial. Sixty-four participants were randomized across two intervention arms and assessed at twelve weeks for the primary outcome…

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