Speed-accuracy tradeoffs pose a problem whenever a. error ...

[stephzh]

Speed-accuracy tradeoffs pose a problem whenever
 
  a. error rates are not systematically related to the independent variable.
  b. there is no effect of the independent variable.
  c. error rates increase as reaction time increases.
  d. error rates increase as reaction time decreases.

Question 2

A researcher studies language development by selecting a sample of two-year-old children, a sample of three-year-old children, and a sample of four-year-old children. Each child's language skill is measured and the researcher plans to compare the scores for the three groups. This study is an example of a(n) ____.
 
  a. time-series design
 b. interrupted time-series design
 c. cross-sectional developmental design
  d. longitudinal developmental design

[blakcmamba]

Answer to Question 1

D

Answer to Question 2

c

[stephzh]

Thanks for the timely response, appreciate it

[kjohnson]

Wow, this really help