My step-mom is startled really easily. She's really sensitive to sudden loud noises or things/people jumping out at her. She'll even jump when you are just standing somewhere she didn't expect you to be. She doesn't always physically jump tho. Usually she just freezes for a moment. Also she's really sensitive to distractions. She doesn't like when my dad puts his hand on her head while watching TV because she feels like 'he's stealing her power.' She was kind of joking, but she says she doesn't like it because she can't focus.