<![CDATA[This research aims to determine the effectiveness of group guidance using modeling techniques to increase the self-confidence of mentally retarded children at SMALB Negeri Sumbang Bojonegoro. Researchers used data collectors in the form of the Guttman scale with 2 alternative answer choices, namely Yes and No. The validity test obtained 24 valid item data and 6 invalid items. Meanwhile, from the reliability test, valid item data was obtained from items whose calculated r was ≥ (0.25). Valid items include items 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 with the highest product moment value is item no. 15 with value 0.705 while the lowest value is in item no. 27 with a value of 0.109. Items that were dropped included items 1, 2, 13, 14, 20, and 30 where r calculated ≤ (0.25). Next, a reliability test was carried out using Cronbach's alpha technique with SPSS 22.0 and a reliability value of 0.728 was obtained. Because this data is non-parametric, quantitative analysis without using assumption tests using statistical formulas which in carrying out the analysis use the SPSS 22.0 computer program with the Mann Whitney U Test formula. The research location was carried out at SMALB Negeri Sumbang Bojonegoro with a research focus on SMALB students whose Self Confidence was low. From the research results, it is known that the experimental class posttest results have an increase in value from the pretest results before treatment was given. Apart from that, it is known that the first group's average rank is 3.00, lower than the second rank's average, namely 8.00. This shows that the average pretest score for 5 subjects is lower than the average posttest score. With a U value of 0.000 and a W value of 15,000, if converted to a Z value the value is -2.627. The Sig value is 0.008 < 0.05, which means there is a difference between the two groups, namely the preetest and posttest groups so that Ho is accepted so that there is effectiveness of group guidance to increase the self-confidence of mentally retarded children at SMALB Negeri Sumbang Bojonegoro.]]>
