what is the difference between validity and reliability of results? also, is visualisation and mental rehearsal the same thing?
Hi!
So, simply put, reliability relates to the repetition of a test, Eg/ same test repeated on different days under the same conditions. Validity is testing what it's supposed to test, Eg/ if you wanted to work out the fitness of a basketball player, you're not going to make them shoot baskets, you're going to give them a series of fitness tests, such as the beep test. So, something may be reliable since it was repeated, but not valid, as it did not test what they wanted to achieve.
Visualisation and mental rehearsal are similar. Visualisation engages only with the visual sense, so just seeing an image (Eg. visualising a 100m track race). Mental rehearsal engages with all the sense, ie/ sight, touch, sound, taste, smell (Eg. visualise the 100m race, hearing the spectators, feeling theair on your body etc.)
Hope this helped