Baseline Cognitive Function

We included the following objective memory and non-memory cognitive tests: 15-word Learning test immediate and delayed recall (Bleecker et al., 1988), Stroop tests (reading, color-naming and interference) (Golden, 1976; Goethals et al., 2004), the Letter-digit Substitution task (Lezak, 1984), word fluency test (Welsh et al., 1994) and the Purdue Pegboard test (Desrosiers et al., 1995). Subjective cognitive complaints were evaluated by interview. This interview included three questions on memory (difficulty remembering, forgetting what one had planned to do, and difficulty finding words), and three questions on everyday functioning (difficulty managing finances, problems using a telephone, and difficulty getting dressed) (Hoogendam et al., 2014).