Conventionally we are taught to believe that first option chosen was most likely to be right and it’s better to refrain from changing.

But research shows otherwise,

Most of the times we change from wrong to right. But we remember those few instances where right option was changed to wrong.

This act of selectively remembering unfavourable/usual events is Von Restorff effect

Here is some real life data on the same from Benjamin, L. T., Cavell, T. A., & Shallenberger, W. R. (1984). Staying with the initial answers on objective tests: Is it a myth? Teaching of Psychology, 11, 133-141.

The percentage of “right to wrong” changes is 20.2%, whereas the percentage of “wrong to right” changes is 57.8%, nearly triple