Which child is best described as an "average child"? a. natalya, who has some classmates that like her somewhat and others that dislike her somewhat b. yuri, who is ignored by his classmates c. georgi, who is well liked by most of her classmates d. donald, who is disliked by most all of his classmates?

Using mr smith and his id, identify two potential internal validity threats that might affect the a—b design. tell me how that threat might impact conclusions in the a—b design. note #1: you cannot use maturation (since i already did that one for note #2: there are some mr smith id threats that won’t have much impact in a single case design.