I catched two mices in a trap is an example of egocentric ...

[stevenposner]

I catched two mices in a trap is an example of
 
  egocentric speech.
  overregularization.
  literal translation.
  the past imperfect.

Question 2

The formation of overregularization in a child's speech patterns indicates
 
  he or she is entering a sensitive period of language development.
  he or she is able to apply grammatical rules, although incorrectly, to her
  vocalizations.
  logical extension is now possible.
  fast-mapping has occurred.

[debra928]

Answer to Question 1

overregularization.

Answer to Question 2

he or she is able to apply grammatical rules, although incorrectly, to her
vocalizations.