The general Spearman-Brown formula is used to estimate the reliability of a lengthened test

Lewis has agreed to proofread a long legal brief that Trudy has written, even though he doesn't really like Trudy. Lewis knows that he will not receive any additional pay for his extra work, and he thinks that proofreading is one of the most boring jobs there is. However, after the legal brief is finished, Lewis decides that proofreading isn't such a bad job after all; he feels that at times he

actually enjoyed the exacting work. The change in attitude that Lewis has experienced can BEST be explained using a. the matching hypothesis. b. a self-serving bias. c. cognitive dissonance theory. d. the fundamental attribution error.

The so-called Zeigarnik effect helps us to ____

a. remember unfinished tasks, and thus to return to complete them b. learn when we have set unrealistic goals for ourselves, and to set more realistic goals in the future c. recognize when tasks are too easy or too hard (and therefore a bad match for our ability levels), and to seek out tasks that are more appropriate d. assess the pros and cons of a given situation, and to make decisions based on this assessment