{"id":12799,"date":"2021-02-26T13:00:02","date_gmt":"2021-02-26T04:00:02","guid":{"rendered":"https:\/\/adc-japan.com\/uk\/tips-en\/12799.html"},"modified":"2026-10-18T08:01:36","modified_gmt":"2026-10-17T23:01:36","slug":"the-uchida-kraepelin-test-and-incorrect-answers","status":"publish","type":"post","link":"https:\/\/adc-japan.com\/uk\/en\/tips-en\/12799.html","title":{"rendered":"The Uchida-Kraepelin Test and Incorrect Answers"},"content":{"rendered":"<aside class=\"uk-ai-translation-notice\" lang=\"en\" style=\"box-sizing:border-box;clear:both;margin:0 0 1.5em;padding:1em;border:1px solid #ccd5de;border-left:4px solid #486581;background:#f4f7fa;color:#243746;font-size:14px;line-height:1.8;overflow-wrap:anywhere;\">\n<p style=\"margin:0;\">This page has been automatically translated from Japanese using generative AI. Translations may contain errors. Please contact us to confirm important information.<\/p>\n<\/aside>\n<p>The Uchida-Kraepelin Test belongs to a category of psychological tests known as performance tests. Test takers perform continuous addition, repeatedly adding pairs of single-digit numbers.<\/p>\n<p>For example, when 3 and 8 appear next to each other, 3+8=11, so the rule is to write only the units digit, 1. Writing another digit and leaving it uncorrected is counted as an incorrect answer.<\/p>\n<p>Why \u2018leaving it uncorrected\u2019? The test allows a mistake to be crossed out with a diagonal slash \u2018\uff0f\u2019 and replaced with the correct answer. This rule is explained before the test.<\/p>\n<p>Even if someone writes 2 for 3+8, crossing it out with \u2018\uff0f\u2019 and writing 1 makes it a correct answer; it is not counted as an error.<\/p>\n<p>In the usual Judgment of the Uchida-Kraepelin Test, incorrect answers in three specified lines are counted.<\/p>\n<p>There are 30 lines in the whole test, so this is a 10% sample. How many errors occur in these three lines?<\/p>\n<p>Statistics from Nisseiken, Inc. give the following picture.<\/p>\n<figure class=\"wp-caption alignnone\" style=\"max-width:1025px;width:100%;\"><a href=\"https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2020\/07\/error.png\"><img decoding=\"async\" class=\"wp-image-6152 size-full\" src=\"https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2020\/07\/error.png\" width=\"1025\" height=\"637\" style=\"max-width:100%;height:auto;\" alt=\"Number of incorrect answers in three lines (10% of the full test). Horizontal axis: errors, 0, 1, 2, 3, 4\u20135, 6\u20137; vertical axis: percentage of test takers.\" srcset=\"https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2020\/07\/error.png 1025w, https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2020\/07\/error-300x186.png 300w, https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2020\/07\/error-768x477.png 768w\" sizes=\"(max-width: 1025px) 100vw, 1025px\" \/><\/a><figcaption>Number of incorrect answers in three lines (10% of the full test). Horizontal axis: errors, 0, 1, 2, 3, 4\u20135, 6\u20137; vertical axis: percentage of test takers.<\/figcaption><\/figure>\n<p>0 errors: approximately 46% of test takers<br \/>1 error: approximately 25% of test takers<\/p>\n<p>Together, these already account for more than 70% of test takers.<\/p>\n<p>2 errors: approximately 12% of test takers<br \/>3 errors (an average of one per line): approximately 6% of test takers<\/p>\n<p>Together, these account for approximately 90% of test takers.<\/p>\n<p>The author suggests that it seems fair to say \u2018people ordinarily make very few mistakes when adding single-digit numbers.\u2019<\/p>\n<p>On that basis, someone making five or ten errors in a single line may be in a state that differs from the usual situation.<\/p>\n<p>Errors are relatively rare, which can make statistical analysis difficult. Nevertheless, the author notes that distinctive features can also emerge in clinical observation of people who make many errors.<\/p>\n<ul>\n<li><strong>Made a careless mistake without noticing<\/strong><br \/>Errors often appear sporadically and irregularly; feeling rushed seems to be a frequent cause.<br \/><img decoding=\"async\" class=\"size-full wp-image-6148 alignnone\" src=\"https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2020\/07\/er1.png\" alt=\"Made a careless mistake without noticing\" width=\"455\" height=\"196\" style=\"max-width:100%;height:auto;\" srcset=\"https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2020\/07\/er1.png 455w, https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2020\/07\/er1-300x129.png 300w\" sizes=\"(max-width: 455px) 100vw, 455px\" \/><\/li>\n<li><strong>An answer believed to be correct was actually wrong<\/strong><br \/>Occasionally someone fails to recognize an assumption, for example answering 2 every time 8+3 appears. A tendency to persist in the same pattern may be involved.<br \/><img decoding=\"async\" class=\"size-full wp-image-6147 alignnone\" src=\"https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2020\/07\/er2.png\" alt=\"An answer believed to be correct was actually wrong\" width=\"454\" height=\"196\" style=\"max-width:100%;height:auto;\" srcset=\"https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2020\/07\/er2.png 454w, https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2020\/07\/er2-300x130.png 300w\" sizes=\"(max-width: 454px) 100vw, 454px\" \/><\/li>\n<li><strong>Noticed a mistake but did not correct it, or noticed it but could not correct it<\/strong><br \/>Errors often occur one after another, as though the person\u2019s mental brakes are not working effectively.<br \/><img decoding=\"async\" class=\"size-full wp-image-6150 alignnone\" src=\"https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2020\/07\/er3.png\" alt=\"Noticed a mistake but did not correct it, or noticed it but could not correct it\" width=\"455\" height=\"196\" style=\"max-width:100%;height:auto;\" srcset=\"https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2020\/07\/er3.png 455w, https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2020\/07\/er3-300x129.png 300w\" sizes=\"(max-width: 455px) 100vw, 455px\" \/><\/li>\n<li><strong>Had no intention of answering correctly from the start, or stopped caring partway through<\/strong><br \/>This tends to occur when the person is not in a psychological state to engage seriously with the test.<br \/><img decoding=\"async\" class=\"size-full wp-image-6149 alignnone\" src=\"https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2020\/07\/er4.png\" alt=\"Had no intention of answering correctly from the start, or stopped caring partway through\" width=\"454\" height=\"196\" style=\"max-width:100%;height:auto;\" srcset=\"https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2020\/07\/er4.png 454w, https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2020\/07\/er4-300x130.png 300w\" sizes=\"(max-width: 454px) 100vw, 454px\" \/><\/li>\n<li><strong>Cannot perform the calculation in the first place<\/strong><br \/>The amount of work is often extremely low. Occasionally, even adults can be seen counting on their fingers.<\/li>\n<\/ul>\n<aside class=\"translation-editorial-note\" style=\"border-left:3px solid #888;padding:12px;margin-top:24px;\">\n<p>Editorial note on this translation: This article presents the Japanese author\u2019s explanation published in 2021. The approximate percentages refer to the statistics cited there; they are not universal norms for every country or group. The four percentages shown in the text total 89%, rounded here to about 90%; do not infer exact percentages for the remaining chart bars. The five examples are possible interpretations, not diagnoses or proof of a person\u2019s character. Error counts alone do not establish a mental disorder, disability, motivation or job suitability. Instruction comprehension, calculation experience, language, fatigue and test conditions also need consideration. Use the authorized administration instructions and qualified Judgment; do not decide recruitment, placement or health matters from this test alone.<\/p>\n<\/aside>\n","protected":false},"excerpt":{"rendered":"<p>This page has been automatically translated from Japanese using generative AI. Translations may contain errors &hellip; <a href=\"https:\/\/adc-japan.com\/uk\/en\/tips-en\/12799.html\" class=\"more-link\">\u7d9a\u304d\u3092\u8aad\u3080 <span class=\"screen-reader-text\">The Uchida-Kraepelin Test and Incorrect Answers<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":11961,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[122],"tags":[],"class_list":["post-12799","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tips-en"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"How incorrect answers are counted in the Uchida-Kraepelin Test: corrections, three-line sampling, error distribution and five illustrative patterns, with interpretation limits.\" \/>\n\t<meta name=\"robots\" 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