Examlex
The Solomon four-group design provides a means for controlling the interactive testing effect, as well as other sources of extraneous variation.
Evaluate
The act of judging the value or condition of something in a careful and thoughtful way, typically for decision-making purposes.
Intangibility
A characteristic of services that cannot be physically touched or seen before the purchase decision, making them difficult to evaluate beforehand.
Massage
A therapeutic technique that involves manipulating the body's muscles and tissues to relieve pain, reduce stress, and improve overall wellness.
Backache
A common physical discomfort or pain felt in the back, often resulting from strain, tension, or injury.
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