Which Design Is Better, an A-B-A Design or an A-B-A-B

question 9

Multiple Choice

Which design is better, an A-B-A design or an A-B-A-B design?

• A)A-B-A; it is more parsimonious
• B)A-B-A; it has the ethical advantage of leaving subjects exactly where they started
• C)A-B-A-B; it compares two different treatments
• D)A-B-A-B; the treatment is evaluated twice

---

Definitions:

Constant-Sum Game

A situation in game theory in which the total gains and losses among participants are always balanced, implying that one player's gain is another's loss.

Simultaneous-Move

Refers to games or decision scenarios where all players make their moves at the same time, without knowledge of the others' choices.

Loss

Loss refers to the situation in which the total costs exceed the total revenues of a business or transaction, resulting in a negative profit.

Simultaneous-Move

A strategy in game theory where all players make their moves at the same time, unaware of the choices other players are making.