Differences Between APOE Carriers and Non-APOE Carriers on Neurocognitive Tests: Jensen Effects?

ABSTRACT:

Background

Being a carrier of the apolipoprotein E (APOE) ε4 allele is a clear risk factor for development of Alzheimer's disease (AD). On some neurocognitive tests, there are smaller differences between carriers and noncarriers, while other tests show larger differences.

Aims

We explore whether the size of the difference between carriers and noncarriers is a function of how well the tests measure general intelligence, so whether there are Jensen effects.

Methods

We used the method of correlated vectors on 441 Korean older adults at risk for AD and 44 with AD.

Results

Correlations between APOE carriership and test scores ranged from -.05 to .11 (normal), and -.23 to .54 (AD). The differences between carriers and noncarriers were Jensen effects: r = .31 and r =

SUBMITTER: Nijenhuis JT 

PROVIDER: S-EPMC10852421 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature