Table 1 Inclusion/exclusion criteria

Inclusion criteria

Age 60 + years Reference person Reads and writes in Spanish Petersen criteria (1999) for PwaMCI: (1) memory problems, (2) objective memory disorder, (3) absence of other cognitive disorders or repercussions on daily life, (4) normal general cognitive function and (5) absence of dementia CDR = .5 GDS < 5 MMSE ≤ 27

Age 60 + years Reference person Reads and writes in Spanish DSM-5 criteria for mayor neurocognitive disorder: A. Evidence of significant cognitive decline from a previous level of performance in one or more cognitive domains: complex attention, executive function, learning and memory, language, perceptual-motor, social cognition. (1) Concern of the individual, a knowledgeable informant or clinician that there has been a significant decline in cognitive function, (2) A substantial impairment in cognitive performance documented by standardised neuropsychological testing B. The cognitive deficits interfere with independence in everyday activities. At a minimum, assistance should be required with complex instrumental activities of daily living, such as paying bills or managing medications C. The cognitive deficits do not occur exclusively in the context of a delirium D. The cognitive deficits are not better explained by another mental disorder, with or without behavioural disturbance (e.g. major depressive disorder, schizophrenia) CDR ≥ 1 and < 2 GDS < 5 MMSE 20 < x < 25

Exclusion criteria

Loss of senses Severe physical comorbidity Current significant neurological disorder Current significant anxiety or depressive disorder History of alcoholism and/or substance abuse Current antipsychotic medication and/or cognition-affecting medication Recent hospitalisation for mental illness or stroke (in the past 6 months)

Loss of senses Severe physical comorbidity Current significant neurological disorder Current significant anxiety or depressive disorder History of alcoholism and/or substance abuse Current antipsychotic medication and/or cognition affecting-medication Recent hospitalisation for mental illness or stroke (in the past 6 months)