Which one of the scales is the most reliable? Explain. The scale that is the most reliable is Which one of the scales is the least reliable? Explain. The scale that is the least reliable is, In your opinion, are all the scales adequately reliable? Explain. In my opinion all the scales The excerpt presents the results of only one of a number of reliability studies described in the manual for the BRP-2. In your opinion, is this one reliability study sufficient or are others needed? Explain. The test-retest reliability coefficients are based on a two-week interval. Do you think the coefficients would be higher or lower if a two-month interval had been used? Speculate on why test makers usually allow an interval of a week or two between the two administrations of the test instead of giving the same test twice in a row at one sitting. If you were considering using this instrument, what other types of reliability coefficients, if any, would you like to see in the manual? Explain. Table 4.3 Delayed Test-Retest Reliability of the BRP-2 Scales with Adolescents (decimals omitted) BRP-2 Scale Parent Rating Scale Teacher Rating Scale Student Rating Scales: Home Student Rating Scales: School Student Rating Scales: Peer r 84 91 78 , 83 86