Astudent is considering doing a complete repeated measures design experiment involving motor skills. the student's advisor has told him that people show a large initial improvement on the task followed by slow steady improvement after this initial change. the student must choose a technique for balancing practice effects. which technique should the student not use?
a. block randomization
b. latin square
c. abba counterbalancing
d. all possible orders

c. ABBA counterbalancing

Explanation:

The student should not use the method because it is a progressive error management technique for each subject by introducing all treatment circumstances twice, first in one sequence, then in the other (AB, BA) by subject counterbalancing.

If participants experience conditions more than once, they experience the conditions first in one order, then the opposite order.

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.

answer: a. same unit

explanation: