distractibility

[ dih-strak-tuh-bil-i-tee ]
/ dɪˌstræk təˈbɪl ɪ ti /

noun Psychiatry.

inability to sustain one's attention or attentiveness, which is rapidly diverted from one topic to another: a symptom of a variety of mental disorders, as manic disorder, schizophrenia, or anxiety states.

Origin of distractibility

First recorded in 1900–05; distract + -ibility