Using the combination of liquids task, Inhelder and Piaget ...

[mydiamond]

Using the combination of liquids task, Inhelder and Piaget illustrated _______________, a key characteristic of formal operational reasoning.
 
  a. testing all possible combinations
  b. isolating variables
  c. using language to support reasoning
  d. metacognitive understanding

Question 2

In a study by Inhelder and Piaget (1958) that involved a pendulum, they found that between the ages of 12 and 16, a sophisticated problem solving approach was taken in which
 
  a. one variable at a time is manipulated.
  b. all variables are tested at once.
  c. a syllogism is used.
  d. adolescents look up the solution online.

[princessflame2016]

Answer to Question 1

Answer: a. testing all possible combinations

Answer to Question 2

Answer: a. one variable at a time is manipulated.

[mydiamond]

Great answer, keep it coming

[sultansheikh]

Thanks for the timely response, appreciate it