1. The aim of early work in child study was to describe ________ development and determine its causes.
   a. cognitive b. emotional c. normal d. abnormal  
2. This type of study consists of observing two or more behaviors or developmental characteristics for a particular group of children in an effort to determine whether relationships exist among the behaviors.
   a. correlational b. anecdotal c. case d. correctional  
3. This type of study involves examining factors of interest by observing a group of children of many different ages only once or a small number of times.
   a. anecdotal b. case c. cross-sectional d. longitudinal  
4. This type of research involves following a group of children over a period of time in order to observe changes in their behavior and development at various age levels.
   a. anecdotal b. case c. cross-sectional d. longitudinal  
5. An accumulation and interpretation of information from many different sources across time is known as a:
   a. case study b. event sample c. time sample d. anecdotal record  

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