The goal of this pilot interventional clinical trial (non-drug study) is to learn whether memory techniques (mnemonics) can improve cognitive performance in adults over 50 years old with subjective cognitive decline who are followed at the Brain Health Service of Monza. The study will also evaluate the feasibility of this intervention and explore which biological or clinical factors may influence its effects. The main questions it aims to answer are: * Do memory techniques improve overall cognitive performance, measured by a composite score from a neuropsychological test battery, after 6 months? * Are any cognitive benefits maintained over time (up to 9 months)? * Do biomarkers (such as blood p-tau217 levels, APOE genotype, or brain atrophy on MRI) influence the response to memory training? * Do memory techniques improve subjective cognitive complaints and performance on sensitive memory and cognitive-motor tests? Researchers will compare a memory training group to a control group receiving information only to see whether structured mnemonic training leads to greater improvement in cognitive outcomes. Participants will be randomly assigned to either the memory training group or the control group. Both groups will undergo complete cognitive assessments at baseline, 6 months, and 9 months. If assigned to the training group, participants will attend two in-person group sessions to learn basic and advanced memory techniques, participate in two additional online group meetings, access online video materials, and practice memory exercises on a dedicated online platform for about 20 minutes per day. If assigned to the control group, participants will receive general information about memory techniques but no structured training or platform access. A total of 80 participants (40 per group) will be enrolled. This pilot study will help estimate the size of the effect and determine whether a larger future study is feasible.
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Change from baseline to 6 months in composite neuropsychological test battery (NTB) z-score (range: - infinity, infinity; higher scores mean better outcomes)
Timeframe: Baseline to 6 months