What causes people to be rigid?

What causes people to be rigid is combination of personality, upbringing, anxiety, and neurological factors. People may become rigid due to anxiety and need for control, where strict routines and rules provide sense of safety and predictability in uncertain world, so rigidity reduces anxiety. Upbringing in highly strict or critical household where mistakes were punished can lead to rigid behavior as learned coping to avoid criticism. Personality traits like perfectionism and high conscientiousness can predispose to rigidity. Neurological factors including autism spectrum where need for sameness and difficulty with change is common, and obsessive compulsive personality traits where orderliness and control are central, can cause rigidity. Past trauma or unpredictable environments can cause people to become rigid to create stability. Cultural factors emphasizing obedience and discipline may encourage rigidity. Brain factors related to executive function difficulties in shifting attention and adapting can also cause rigid thinking. So causes include anxiety, upbringing, personality, neurological differences, and learned coping strategies.