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Table 1 Behavioral data collection

From: Brain connectivity and metacognition in persons with subjective cognitive decline (COSCODE): rationale and study design

Behavioural assessment

Cognition

 Global cognition

Mini-Mental State Examination, Montreal Cognitive Assessment, Clock test, Three-Objects-Three-Places

 Episodic memory

Free and Cued Selective Reminding Test, Rey Auditory Verbal Learning Test, Logical Memory Story B, Doors test, Rey Osterrieth complex figure copy and recall

 Working memory

Digit Span (WAIS-IV)

 Attention

Coding (WAIS-IV), d2-R

 Language

Naming (GREMOTs battery), writing (GREMOTs battery), reading comprehension (GREMOTs battery)

 Calculation

Mental calculation, oral (Barcelona battery)

 Praxis

Gestural praxis (BREP), constructional praxis (CERAD battery)

 Executive functions

Semantic and Phonemic Fluency, Stroop Victoria, Trail-Making Test (GREFEX battery)

 Visuo-perceptive and spatial abilities

Incomplete letters, dot counting, number location, cube analysis (VOSP battery)

 Processing speed and robustness

Simple reaction time

 Motor speed and dexterity

Groove Peg Board, tapping test (WPS electronic)

 Social cognition

Facial emotion recognition (Mini-SEA battery)

Metacognition and prospective memory

 Knowledge

Motivation Assessment for Cognitive Activities Questionnaire, Metamemory in Adulthood Questionnaire, Metacognitive Prospective Memory Inventory

 Monitoring

Metacognition task

Psychological health

 Personality traits

NEO - Personality Inventory – 3

 Depression, anxiety and stress

Hospital Anxiety and Depression Scale, State-Trait Anxiety Inventory, Depression Anxiety Stress Scale

 Ruminations, negative thoughts and worries

Ruminative response scale, Perseverative Thinking Questionnaire, Penn State Worry Questionnaire

 Alexithymia

Toronto Alexithymia Scale-20

 Cognitive coping strategies

Cognitive Emotion Regulation Questionnaire

 Attachment style

Attachment scale, Experiences in Close Relationships-Revised Scale (short version)

Lifestyles

 Physical and leisure activities

Historical Leisure Activity Questionnaire, Physical Activity Scale

 Social contact

Lubben Social Network Scale

 Food habits

Food Frequency Questionnaire

 Cognitive reserve

Cognitive Reserve Index Questionnaire

 Quality of life

Euro-Quality of Life (EQ-5D), 12-Item Short Form Survey (version 2)

General health

 Activity of daily living

Amsterdam-instrumental activities daily living (short version)

 Cognitive complaints

Cognitive Change Index self and informant

 Comorbidities

Cumulative Illness Rating Scale (CIRS), Cardiovascular Risk Factors, Aging, and Incidence of Dementia (CAIDE)

 Sleep

Pittsburgh Sleep Quality Index

 Fatigue

Multidimensional Assessment of Fatigue Scale