When 3-year-old matthew does not get his way, he tends to launch right into a tantrum. he does not just get a little upset but experiences intense anger very quickly. which aspect of temperament does this refer to?

The aspect of temperament that this refers to is EMOTIONALITY.
Emotionality refers to the observable behavioural and psychological component of emotion. It is a measure of a person emotional response to stimulus. Emotionality can be positive or negative. Negative emotionality is a personality trait, which refers to the frequency and the intensity with which a person experience negative emotions such as anger, stress, sadness, depression, etc.

There is lots of evidence

Answer/// absolute and unchanging laws;