In Piaget's theory, the stage of development between birth and 2 years of age, in which the individual develops the ability to form mental representations, is the ________ stage

Two students are discussing their teacher's inability to remember student names. One attributes the inability to a poor memory, but the other believes it is due to a lack of motivation. Researchers would judge which of the two explanations is best by

a. attributing the inability to a situational variable. b. measuring how strongly each friend feels about his opinion. c. attributing the inability to remember to a dispositional variable. d. determining how well each explanation predicts behavior in new situations.

According to the article Who's Old First about physical declines in old age, cross linkage results in:

(a) bones being joined to other bones as the joints between them disappear (b) many new connections being made between nerve cells (c) new ideas being formed out of several old, traditional ideas (d) body tissues becoming less elastic