Normative Data for the Modified Location Learning Test (m-LLT) in the French-Quebec Population Aged Between 50 and 89 Years.

Abstract

Objective: This study aims to establish normative data for the modified Location Learning Test (m-LLT), considering sociodemographic characteristics such as age, sex, and educational level.

Materials and methods: One hundred eighty-nine middle-aged and elderly people aged 50 years and older were recruited from the French-speaking population in Quebec (Canada). The m-LLT procedure described by Kessels et al. (2006) was used. Percentiles were derived for performance scores (Trial 1, Total Displacement Score, Learning Index, Delayed Recall Displacements), stratified by sociodemographic characteristics where appropriate.

Results: Regarding the sex variable, the number of displacements in Trial 1 and for the Total Displacement Score were higher in men than in women. Age was positively associated with the Total Displacement Score and Delayed Recall Displacements and negatively associated with the Learning Index. Education was positively associated with the Learning Index and Delayed Recall Displacements. Two-thirds of the normative sample achieved a perfect score on the fifth and final learning trial.

Conclusions: Learning was better in women than in men, which may be explained by the use of verbal and nonverbal strategies and environmental awareness favoring women. The decline in learning and retrieval with age can be explained, among other reasons, by a less strategic approach during the encoding phase, a decline in other cognitive domains, or poorer imagery-based representations of the stimuli. The associations between education, strategic retrieval, and cognitive reserve are discussed. Overall, these normative data will enhance the detection of cognitive decline in geriatric clinical or research settings.