Emergence of measurable cognitive-atrophy effects in AI-heavy-user cohorts by 2028 (reduced working-memory, reduced source-evaluation capacity, reduced sustained-attention) documented in ≥3 peer-reviewed studies with n>1000?

By the end of 2028, researchers have published studies showing that people who use AI assistants heavily—for writing, research, and problem-solving—score lower on working-memory tests and struggle more to spot false sources than they did five years earlier. Three separate studies with over 1,000 participants each found the same pattern: more AI use correlates with weaker ability to focus for long stretches and less skill at evaluating where information comes from. The studies appear in journals like Cognitive Psychology and Psychological Science.

Heavy AI users show no consistent decline in thinking skills by 2028, and the peer-reviewed literature fails to establish a clear link between AI reliance and mental weakness. Researchers find that AI use reshapes how people work but does not shrink working memory or source-checking ability; people may just use these skills differently. No cluster of three large studies with over 1,000 participants each reaches print documenting measurable cognitive loss in this population.