TABLE 1.
–Ethogram listing the 16 behaviors and their definition
| Behavior label | Definition | Example |
|---|---|---|
| COMPULSIVITY | ||
| Utilization behavior 10 | Grasping and touching objects of the environment without any contextual reason | Opening and closing the window without any real purpose |
| Perseveration 10 | Difficulty in shifting mental set and behavioral perseveration | Repeated unsuccessful attempts to open the tap (no running water in the room) |
| Repetitive movements 3 | Repeating stereotyped, compulsive/ritualistic behaviors | Rubbing hands |
| Compulsive eating 3 | Eating excessive amounts of food in the absence of real hunger and/or inappropriate foods in the specific context | Eating canned sardines just after breakfast |
| IMPULSIVITY | ||
| Emotional outburst 5 | Persistent laughing, crying, or swearing alone in the room | Laughing at the sight of the locked box |
| Inappropriate action 5 | Doing something very unconventional and thoughtless with an object of the room | Discarding the content of a beverage in the sink |
| Singing 5 | Singing alone in the room | Singing “O Christmas Tree” without any reason |
| Dancing 5 | Dancing alone in the room | Doing a few dance steps |
| Self‐talking 5 | Speaking aloud when alone in the room | Commenting on the environment when entering the room |
| SOCIAL DISINHIBITION | ||
| Aggressive behavior toward investigator 3 | Showing hostility, verbal or physical aggressiveness toward the investigator | Yelling “Enter” with anger when the investigator knocks on the door several times |
| Familiar behavior toward investigator 3 | Showing inappropriate familiarity toward the investigator | Speaking in colloquial language |
| Nudity 3 | Exposing inappropriate parts of one's body | Removing one's trousers |
| Harsh handling of objects 3 | Handling an object of the room in a way which may cause potential damage, thus showing lack of respect for the investigator's material | Trying to break a box with a lock instead of searching for the key |
| Inappropriate gesture or posture 3 | Impolite, inappropriate physical behavior in a social context | Picking one's nose/teeth |
| Lack of decorum 3 | Failing to respect cultural norms of politeness | Yawning, sneezing, or coughing without putting hand in front of their mouth |
| Disregard for rules or investigator 3 | Lack of response to social cues, ignoring instructions given by the investigator | Not answering investigator's questions |