The problem in observational research that resembles the threat ...

[WWatsford]

The problem in observational research that resembles the threat to validity called instrumentation in experimental research is
 
  a. observer bias.
  b. subject reactivity.
  c. observer drift.
  d. ethological bias.

Question 2

Sometimes in a repeated measures design, an early treatment will not have affect later performance initially, but after a while, the early treatment does affect performance. This would be a case of
 
  a. asymmetric transfer.
  b. a baseline effect.
  c. latency effect.
  d. history effect.

[nickk12214]

Answer to Question 1

C

Answer to Question 2

C

[WWatsford]

Gracias!

[jackie]

Thanks for the timely response, appreciate it