{"id":12196,"date":"2020-07-15T10:45:57","date_gmt":"2020-07-15T01:45:57","guid":{"rendered":"https:\/\/adc-japan.com\/uk\/?p=12196"},"modified":"2026-10-18T07:47:57","modified_gmt":"2026-10-17T22:47:57","slug":"uchida-kraepelin-test-and-work-volume-en","status":"publish","type":"post","link":"https:\/\/adc-japan.com\/uk\/en\/tips-en\/12196.html","title":{"rendered":"The Uchida-Kraepelin Test and Work Volume"},"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>Each row of the Uchida-Kraepelin Test sheet contains 116 digits. Because the task is to add adjacent digits, completing an entire row means performing 115 additions. In the main test, examinees move to a new row at the signal given every minute. If they reach the end of a row before the signal, they continue on the next row. If they complete five more additions on that row before the signal, they have completed 120 additions in one minute.<\/p>\n<p>How much work does an \u201cordinary person\u201d complete in one minute? The Japanese average is around 60 additions. Average work volume (AV) is calculated by dividing the total work volume by 30 minutes. In the Japanese distribution, approximately 60% fall within 50\u201374 additions per minute, and approximately 40% within 55\u201369. Work volume in this range can therefore be considered typical.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2020\/07\/av_jp.png\" alt=\"Distribution of average work volume (AV) in the Japanese sample\" width=\"1716\" height=\"612\" \/><figcaption>Source: Nisseiken, Inc.<\/figcaption><\/figure>\n<p>Work volume in the Uchida-Kraepelin Test has been studied from various perspectives.<\/p>\n<p>Within a group of people of a similar age, work volume is not evenly distributed. Far more people are close to the average, and fewer are found as the distance from the average increases, producing a graph resembling a normal distribution. When matching people to jobs, more work volume is not necessarily better. In a company, there is a range of work volume that is sufficient and appropriate for the situation and the purpose of the work. A mismatch is more likely when work volume is either too high or too low for those requirements.<\/p>\n<p>Average work volume differs considerably between countries and regions. We speculate that this is influenced by the pace of daily life associated with the degree of economic development. Data from examinees tested so far\u2014please note that these samples do not represent entire countries or regions\u2014show average work volumes of 55\u201361 additions per minute in Japan, South Korea, coastal China, Hong Kong and Taiwan, and 41\u201346 in Southeast Asia and India.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2026\/10\/work-volume-region-en.png\" alt=\"Comparison of work volume in East Asian and Southeast Asian samples\" width=\"1021\" height=\"465\" \/><figcaption>Source: Nisseiken, Inc. These figures are for reference, as sample sizes and data collection periods differ.<\/figcaption><\/figure>\n<p>When comparing countries or regions, it is important to look at distributions as well as averages. For example, the graph above shows that selecting the top 20% by work volume from the ASEAN sample produces a group whose work volume exceeds the Japanese average by as much as 10%.<\/p>\n<p>Changes in work volume with age have also been studied. Work volume rises rapidly as children grow, and its increase generally levels off in adulthood, around the thirties. In Japanese data, the average work volume of groups aged 15\u201316 is about 40 additions per minute. It increases with age, reaching 60 in the group aged 22. Growth then becomes more gradual. Groups in their thirties maintain an average close to 65, after which it gradually declines. This can help in observing children\u2019s development and estimating the potential for further growth among new employees.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/adc-japan.com\/uk\/wp-content\/uploads\/2026\/10\/work-volume-age-en.png\" alt=\"Changes in average work volume (AV) by age in Japanese data\" width=\"1687\" height=\"711\" \/><figcaption>Source: Nisseiken, Inc.<\/figcaption><\/figure>\n<p>Research in the transportation field has found that, when groups with high and low work volume are compared, the group with lower work volume is more likely to have accidents.<\/p>\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\/12196.html\" class=\"more-link\">\u7d9a\u304d\u3092\u8aad\u3080 <span class=\"screen-reader-text\">The Uchida-Kraepelin Test and Work Volume<\/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-12196","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=\"Understand work volume in the Uchida-Kraepelin Test, its distribution, regional sample comparisons, age-related changes and implications for job fit.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" 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