The minimal group paradigm experiment was developed by _____.

Tajfel and his colleagues

The correct answer is Option (3) → Tajfel and his colleagues

The Minimal Group Paradigm was developed by Henri Tajfel and his colleagues to study the minimal conditions required for discrimination to occur between groups. This experiment showed that even arbitrary and meaningless distinctions between groups (like preferences for paintings or random group assignments) can lead to in-group favoritism and out-group discrimination, highlighting how easily group biases can form.