Jeff is a fun-loving, intelligent, responsible teenager who likes to dye his hair different colors. however, he is concerned that other people might construe his hair color as reflection of low achievement. his concern is over:

His concern is over "stereotype threat".

Stereotype threat refers to a situational quandary in which individuals are or feel themselves to be in danger of fitting in with generalizations about their social gathering. Since its presentation into the scholarly writing, generalization risk has turned out to be a standout amongst the most broadly contemplated subjects in the field of social psychology.