Eight-month-old Darcy is sitting in her high chair and watches as her mother puts her favorite food, ...

Eight-month-old Darcy is sitting in her high chair and watches as her mother puts her favorite food, Cheerios, into cups. Once cup has two Cheerios and one cup has three. Which cup will Darcy likely reach for first?
 
  a) The cup with three Cheerios, because she understands this number compariso
 b) The cup closest to her dominant hand, because she does not think in terms of numbers
 c) A cup chosen at random, because she does not think in terms of numbers
 d) A cup that has bright colors, because color discrimination is better than number discrimination

Question 2

To understand changes in working memory over the course of development, a researcher gave the same test to elementary school children, adolescents, college students, middle-aged individuals, and older adults.
 
  Which of the following describes the researcher's approach?
   a) It is a cross-sectional study
 b) It is a longitudinal study.
 c) It is a lifespan study.
 d) It is a prospective study.