Anne's study compared pre-post differences in prekindergarten children's strategies for alternatives to violent displays when frustrated by others. She found that there were differences between pre and posttesting. With which validity threat should Anne be most concerned?

Maturation

Explanation:

Maturation can be described as one of the threats to internal validity whereby participants tend to change over time, this can be clearly observed in the sudden change in the life of students as they transition from high school to college, the student become adjusted to college life.

The self awareness that prompts a change of behaviour as on leaves an environment to another.

Anne finding that there were differences between pre and posttesting is most likely going to cause a change in how she respond to the difference.

Hence, Maturation validity threat.

one way archaeology us understand the past is through the material objects it finds, allowing us to know what was being used, and when. for example a dig recently found a flute, believed to be the oldest musical instrument found to date.

i hope this

i got 3,4 and 5 as an answer