A study of a new reading training program achieved, with 100 subjects, the following results: experimental group mean = 20.25 (SD = 2.28) and control group mean = 25.14 (SD = 4.75).However, a second study with 541 subjects found experimental group mean = 28.81 (SD = 2.56) and control group mean = 26.62 (SD 2.01).
A) The first study had a higher effect size.
B) The second study had a higher effect size.
C) Both studies had similar effect sizes.
D) None of these are true.

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The Answer of A study of a new reading training program achieved, with 100 subjects, the following results: experimental group mean = 20.25 (SD = 2.28) and control group mean = 25.14 (SD = 4.75).However, a second study with 541 subjects found experimental group mean = 28.81 (SD = 2.56) and control group mean = 26.62 (SD 2.01).
A) The first study had a higher effect size.
B) The second study had a higher effect size.
C) Both studies had similar effect sizes.
D) None of these are true.

A Study of a New Reading Training Program Achieved, with 100