You are analyzing data that has been collected in annual waves for the past twenty years. Which of the following might be problematic in this type of analysis?
a. many similar questions were asked during each of these waves, and the wording is consistent
b. for the entire twenty years, the data was collected by personal interviews
c. the definitions of some key items have changed over time within the culture
d. using variables that are operationalized consistently over time
Question 2
Being able to benefit from the work of topflight professionals and esteemed academics is an advantage of using:
a. secondary data
b. published statistics
c. nonpublic agency data
d. new data collected by agency staff
Early in the twentieth century, when malnutrition was common, companies such as this one advertised
The human eye, a product of 600 million years of evolution (Lamb, Collin, & Pugh, 2007).
Life Cycle Nutrition: Toddlers through the Later Years
Waves Approaching the Shore
Analyzing texts
Earth 430 Million Years Ago