{"id":8126,"date":"2019-05-22T16:04:19","date_gmt":"2019-05-22T16:04:19","guid":{"rendered":"http:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/heterochrony\/"},"modified":"2019-05-22T16:04:19","modified_gmt":"2019-05-22T16:04:19","slug":"heterochrony","status":"publish","type":"post","link":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/heterochrony\/","title":{"rendered":"Heterochrony"},"content":{"rendered":"<p>Originally introduced into evolutionary biology by <a href=\"http:\/\/www.britannica.com\/EBchecked\/topic\/153345\/Sir-Gavin-de-Beer\" target=\"_self\" data-editable-link=\"http:\/\/www.britannica.com\/EBchecked\/topic\/153345\/Sir-Gavin-de-Beer&amp;target=_self\" rel=\"noopener noreferrer\">Gavin de Beer<\/a> (1899-1972) to account for evolutionary change in the onset or timing of development. &nbsp;Applied to development, it portrays it as a mixture of different timings in the appearance of structures and functions, with some being accelerated and others relatively retarded. &nbsp;Slower developing structures and functions act as constraints on the process of developmental change and which are &#8216;lifted&#8217; once they mature, resulting in the emergence of new abilities. &nbsp;Systemogenesis, as devised by <a href=\"http:\/\/www.enotes.com\/topic\/Pyotr_Anokhin\" target=\"_self\" data-editable-link=\"http:\/\/www.enotes.com\/topic\/Pyotr_Anokhin&amp;target=_self\" rel=\"noopener noreferrer\">Pyotr Anokhin<\/a> (1898-1974), is an attempt to account for the adaptive significance of heterochronicity in development, and especially for adaptation to extrauterine environment in the newborn. &nbsp;He distinguished between two forms of heterchrony:&nbsp;intra-systemic heterchrony (the unequal onset of initial organization and the different maturation of the components of the functional system) and inter-systemic heterochrony (the initial organization and moment of development of those structural components that constitute the basis for different functional systems).&nbsp;<\/p>\n<p>See <a href=\"constraint\">Constraint<\/a>, <a href=\"developmental_emergence\">Developmental emergence<\/a>, <a href=\"emergence\">Emergence<\/a>, <a href=\"organogenesis\">Organogenesis<\/a>, <a href=\"systemogenesis\">Systemogenesis<\/a><\/p>\n<p><\/p>\n<p><\/p>\n<p><\/body><\/html><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Originally introduced into evolutionary biology by Gavin de Beer (1899-1972) to account for evolutionary change in the onset or timing of development. &nbsp;Applied to development, it portrays it as a mixture of different timings in the appearance of structures and functions, with some being accelerated and others relatively retarded. &nbsp;Slower developing structures and functions act &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/heterochrony\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Heterochrony&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2],"class_list":["post-8126","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-glossary","entry"],"_links":{"self":[{"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/posts\/8126","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/comments?post=8126"}],"version-history":[{"count":0,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/posts\/8126\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/media?parent=8126"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/categories?post=8126"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lancaster.ac.uk\/fas\/psych\/glossary\/wp-json\/wp\/v2\/tags?post=8126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}