Why your brain keeps making the same decisions – even when better options exist

A recent study conducted by TUD Dresden University of Technology reveals that people's previous decisions can have a stronger influence on their current choices than previously thought. The research, published in Communications Psychology, provides new insights into the way individuals make everyday decisions and form habits. Lead researcher, Professor Stefan Kiebel, and his team examined decision-making tasks and analyzed data from over 700 participants.

Their findings suggest that irrational preferences often arise not from people comparing values, but from the tendency to repeat actions they once favored in a specific context. This repetition can lead individuals to still prefer a particular option even when better alternatives are available in new situations, according to lead author Dr. Ben Wagner.

The study shows that people have a strong tendency to repeat their previous decisions, acting as a mental shortcut that makes the same choice more likely to occur again. Interestingly, options that are chosen more frequently are not only preferred but also rated as better than alternatives. This research could help explain seemingly illogical behaviors in daily life, such as continued use of familiar shopping choices or routines, even when equal or better options exist.

Understanding this pattern may offer new ways to describe human decision-making more accurately and could be useful in psychology, behavioral research, and designing environments where people regularly make choices.