Fine handwork, or reading; or other abuse of eyes
Pressure of school work
Undue excitement such as crowds, parties, theaters
Tickling, teasing, nagging, tossing
Masturbation
Suppression of curiosity regarding sex phenomena
Suppressing expression of interests, curiosity, or emotion
Worry or unhappiness
Threats of fearsome punishment
Cultivating of fear by “scaring”, telling of grewsome or unhappy stories, seeing exciting picture plays