Is there a term for a person performing worse at something because they are being watched?
For example, a person makes more mistakes typing when someone is watching over their shoulder?
Attempts to answer question:
I've considered the Hawthorne effect and observer effect as an options, but they seem to relate to specific experimental, information technology-related, or physical (as in physics) situations rather than daily life.
I don't think stage-fright applies to the example, because the decreased performance is not driven by anxiety.
Edit: I've seen people very at ease in a one-on-one situation still make more frequent typos when I watched them and vice-versa. Neither they nor I were anxious.
Idioms, single-word answers, and short phrases are all acceptable answers.