By the end of middle childhood, children display a strong desire for

Computer simulation models like ELIZA and PARRY ultimately fail because of:

A) lack of memory B) inability to consistently produce meaningful sentences C) the impossibility of completely debugging programs of that magnitude D) lack of a basic understanding of language and its use E) all of the above

The results of a t test for independent means can be misleading when the sample variances are

A) not at all different (e.g., a 1 : 1 ratio). B) a little different (e.g., a 1.5 : 1 ratio). C) moderately different (e.g., a 2 : 1 ratio). D) very different (e.g., a 4:1 ratio).