19001
A schizothymic individual displays a flat affect and a high degree of introversion , withdrawing from social relations generally ; nevertheless , some individuals with this characteristic may be able to achieve relatively affable social relations and a measure of affectivity in some situations .
 flat affect
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 flat affect