{"id":27830,"date":"2025-06-12T09:02:08","date_gmt":"2025-06-12T07:02:08","guid":{"rendered":"https:\/\/educationalevidence.com\/?p=27830"},"modified":"2025-09-03T13:45:51","modified_gmt":"2025-09-03T11:45:51","slug":"why-do-humans-speak","status":"publish","type":"post","link":"https:\/\/educationalevidence.com\/en\/why-do-humans-speak\/","title":{"rendered":"Why Do Humans Speak?"},"content":{"rendered":"

Why Do Humans Speak?<\/h1>\n
\"\"
Gerd Altmann. \/ Pixabay<\/figcaption><\/figure>\n

License Creative Commons <\/a><\/p>\n

\"\"<\/strong><\/a><\/p>\n

 <\/p>\n

David Rabad\u00e0<\/strong><\/a><\/p>\n

 <\/p>\n

Most ideologies and religions urge us to kneel before the marvel of our capacity for abstract thought, as if it were a perfect gift from providence or evolution. Yet if we are to be logical and objective, we must acknowledge that we think more emotionally than rationally\u2014in other words, they made us swallow it hook, line, and sinker. Abstract thought has not evolved purely for our benefit; quite the contrary, it ended up landing us with a bunch of headaches. Of course, those who choose to ignore this might avoid such discomforts. Ignorance, as they say, brings happiness\u2014or turns us into victims. But let us not complain of ignorance once we have chosen it.<\/p>\n

Over the course of human evolution, the sapiens<\/em><\/strong> mind became more foresighted, abstract, and creative. Our ancestors, in a sense, grew more cunning, more talkative, more inventive. Articulated speech and the emergence of art both appear to stem from this shift. In many ways, the path set in motion by Homo erectus<\/em><\/a><\/span> channelled these transformations. Their social cohesion, their hunting demands, their gathering skills, and their development of more sophisticated tools converged in a vortex of learning. Increasingly, they dedicated more attention and time to their prematurely born offspring, planning further ahead in what they sought to accomplish.<\/p>\n

Today, humans are among the few organisms capable of anticipating<\/strong> their futures on such a grand scale. We design and programme processes years ahead of our present moment. National development plans, educational policy frameworks, or corporate investment strategies all demand long-term thinking. No other species on the planet engages in such temporal projection\u2014and it was Homo erectus<\/em> who first laid the foundations. This fostered and expanded our imaginative capacity, and thereby our creativity. Yet for this to occur, something crucial had to shift: something made that creativity possible. This was a milestone we shall refer to here as SAT\u2014Sophisticated Abstract Thought<\/strong>. SAT brought about biological and cultural consequences far beyond the legacy of erectus<\/em>. It enabled a diversification of tools, more carefully planned migrations, and improved resource management. As a result, Homo<\/em> saw a rise in reproductive success, enabling evolution to spread a new variant of our genus\u2014one that would eventually give rise to a species destined to change everything once more: our own.<\/p>\n

But before we arrive at ourselves, we must ask: when, precisely, did SAT begin? All Homo<\/em> species with greater encephalisation than erectus<\/em> represent a new evolutionary leap in the broader human mosaic. These humans surpassed their predecessors in techniques, communication, and forward planning. Notably, there is a direct link between articulated speech<\/strong> and the capacity to anticipate. One piece of evidence is found in deaf children who are not taught sign language. These children are significantly impaired in their ability to plan, foresee, and reflect with normal cognitive skill. It would seem that without syntax and language, we would lack one of our most essential human faculties: anticipation. SAT gave us that leap forward.<\/p>\n

SAT encompasses a constellation of interconnected phenomena, including art, technology, and articulated speech<\/strong>. The latter\u2014articulated speech\u2014is a chain of sounds that ranges from simple phonemes to the construction of highly complex discourse. An increase in phonemes alone would not have improved communication; on the contrary, it might have led to confusion, as similar sounds became increasingly difficult to distinguish. The real breakthrough lay in the construction of syllables, words, and grammar\u2014allowing a finite number of phonemes to express an infinite array of concepts. Articulated speech links phonemes like \/s\/ and \/o\u028a\/ to build syllables like so<\/em>, which can then be combined with other syllables like ‘up’ \/\u028cp\/ to form words such as ‘soap’ \/so\u028ap\/. These words are joined with verbs to describe actions, which can then be expanded with information on when, how, and where something occurred. And that still only scratches the surface. When we link sentences together, we form stories and narratives which, as Karl Popper observed, allow us to express emotion, warn others, describe absent things, and justify our decisions. From just a handful of phonemes, we have built a communicative system capable of transferring limitless messages, conversing with ourselves, enhancing self-awareness, and refining our social interactions.<\/p>\n

But there is more still. This capacity enables us to order our thoughts logically and thereby strengthens our ability to anticipate. Try to reason through a complex argument without using words, and you will find your brain falters. More than that, articulated speech enhances intelligence itself, as the most cultivated minds show five times the neural connectivity of average ones. Childhood displays remarkable neural flexibility, although adults, with greater knowledge, can continue to imagine and rethink plans more effectively. In short, engaging the brain increases the number of neural connections\u2014and thus, intelligence. We now know that the very circuits associated with pleasure, sexuality, and emotional reward are also involved in language learning, motivation, and memory. In this context, self-awareness\u2014or the capacity to simulate oneself\u2014allowed us to ask the great existential questions: where we come from and where we are headed. From this emerged religion and beliefs in an afterlife. Creativity, consciousness, and language have always been profoundly intertwined.<\/p>\n

If we attempt a rough summary of the evolution of speech, the following outline might suffice. It is very likely that Australopithecus<\/em> remained at the level of phonemes, lacking syntax or grammar. Homo erectus<\/em><\/strong>, perhaps, reached the formation of basic words\u2014guided by infantile repetition, as seen in sounds like mama<\/em>, dada<\/em> and so forth. The crucial question is this: who, then, was the first to develop truly articulated speech, in tandem with SAP? Some, such as Yuval Harari<\/strong>, argue that articulated speech was merely a recent cultural innovation of Homo sapiens<\/em>, and that earlier ancestors lacked it altogether. According to this view, it emerged around 40,000 years ago, coinciding with the flourishing of cave art and symbolic thinking among sapiens<\/em>. But what does the evidence actually suggest? Quite the opposite.<\/p>\n

Harari\u2019s view is rooted in a belief in the recent origin of articulated speech\u2014not in fossil or archaeological data. In truth, speech long predates the sapiens<\/em> of 40,000 years ago, and for several compelling reasons. First, all known human languages share structural traits that indicate a very ancient origin: for example, the universal tendency towards a subject-verb-predicate syntax. Second, linguistic and genetic analyses show that certain African populations are the most divergent, having little or no linguistic connection with others\u2014implying that sapiens<\/em> who migrated out of Africa did so long before 40,000 years ago, developing their own languages and erasing links to earlier forms. Third, the FOXP2 gene\u2014essential to articulated speech\u2014was already present in early sapiens<\/em>, suggesting a shared linguistic capability going back some 400,000 years. Moreover, large-scale correlations between genetic groupings and linguistic families exist worldwide, including in creole languages formed by children with no prior cultural exposure to speech. Fourth, in every known language, subject and verb are coordinated to enhance clarity and balance in communication. Fifth, language acquisition occurs rapidly in all cultures during early childhood\u2014an evolutionary trait with deep roots. Sixth, we know from studies of children raised in linguistic isolation that if they are not exposed to speech by a certain age, the ability to acquire language is permanently lost\u2014a deeply ingrained trait we likely shared with our most ancient Homo<\/em> ancestors.<\/p>\n

All in all, articulated speech rests on a robust genetic foundation common to all Homo sapiens<\/em>. It was not exclusive to us\u2014it was shared with our evolutionary predecessors. The great question, then, remains: when, and with whom, did articulated speech truly evolve? To answer it, we must look far beyond the 40,000-year horizon drawn by Harari.<\/p>\n

___<\/p>\n

The Erectus Set Out on a Journey<\/strong><\/a><\/span><\/p>\n

\n

Source:\u00a0educational EVIDENCE<\/strong><\/p>\n

Rights:\u00a0Creative Commons<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Most ideologies and religions urge us to kneel before the marvel of our capacity for abstract thought, as if it were a perfect gift from providence or evolution. Yet if we are to be logical and objective, we must acknowledge that we think more emotionally than rationally\u2014in other words, they made us swallow it hook, line, and sinker. Abstract thought has not evolved purely for our benefit; quite the contrary, it ended up landing us with a bunch of headaches.<\/p>\n","protected":false},"author":4,"featured_media":27835,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_FSMCFIC_featured_image_caption":"","_FSMCFIC_featured_image_nocaption":"1","_FSMCFIC_featured_image_hide":"","footnotes":""},"categories":[255],"tags":[3114,3116,3117,3115],"class_list":["post-27830","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science","tag-anticipating","tag-articulated-speech","tag-sapiens-en","tag-sophisticated-abstract-thought"],"yoast_head":"\nWhy Do Humans Speak? - Educational Evidence<\/title>\n<meta name=\"description\" content=\"Most ideologies and religions urge us to kneel before the marvel of our capacity for abstract thought, as if it were a perfect gift from providence or evolution. Yet if we are to be logical and objective, we must acknowledge that we think more emotionally than rationally\u2014in other words, they made us swallow it hook, line, and sinker. Abstract thought has not evolved purely for our benefit; quite the contrary, it ended up landing us with a bunch of headaches.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/educationalevidence.com\/en\/why-do-humans-speak\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why Do Humans Speak? - Educational Evidence\" \/>\n<meta property=\"og:description\" content=\"Most ideologies and religions urge us to kneel before the marvel of our capacity for abstract thought, as if it were a perfect gift from providence or evolution. Yet if we are to be logical and objective, we must acknowledge that we think more emotionally than rationally\u2014in other words, they made us swallow it hook, line, and sinker. Abstract thought has not evolved purely for our benefit; quite the contrary, it ended up landing us with a bunch of headaches.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/educationalevidence.com\/en\/why-do-humans-speak\/\" \/>\n<meta property=\"og:site_name\" content=\"Educational Evidence\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-12T07:02:08+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-09-03T11:45:51+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/educationalevidence.com\/wp-content\/uploads\/2025\/05\/group.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"900\" \/>\n\t<meta property=\"og:image:height\" content=\"544\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"educational EVIDENCE\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"David Rabad\u00e0 i Vives\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/why-do-humans-speak\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/why-do-humans-speak\\\/\"},\"author\":{\"name\":\"educational EVIDENCE\",\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/#\\\/schema\\\/person\\\/91a8797f56f6a2e7ba6fd6297739bbf1\"},\"headline\":\"Why Do Humans Speak?\",\"datePublished\":\"2025-06-12T07:02:08+00:00\",\"dateModified\":\"2025-09-03T11:45:51+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/why-do-humans-speak\\\/\"},\"wordCount\":1316,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/why-do-humans-speak\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/educationalevidence.com\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/group.jpg\",\"keywords\":[\"anticipating\",\"articulated speech\",\"S\u00e0piens\",\"Sophisticated Abstract Thought\"],\"articleSection\":[\"Science\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/educationalevidence.com\\\/en\\\/why-do-humans-speak\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/why-do-humans-speak\\\/\",\"url\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/why-do-humans-speak\\\/\",\"name\":\"Why Do Humans Speak? - Educational Evidence\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/why-do-humans-speak\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/why-do-humans-speak\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/educationalevidence.com\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/group.jpg\",\"datePublished\":\"2025-06-12T07:02:08+00:00\",\"dateModified\":\"2025-09-03T11:45:51+00:00\",\"description\":\"Most ideologies and religions urge us to kneel before the marvel of our capacity for abstract thought, as if it were a perfect gift from providence or evolution. Yet if we are to be logical and objective, we must acknowledge that we think more emotionally than rationally\u2014in other words, they made us swallow it hook, line, and sinker. Abstract thought has not evolved purely for our benefit; quite the contrary, it ended up landing us with a bunch of headaches.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/why-do-humans-speak\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/educationalevidence.com\\\/en\\\/why-do-humans-speak\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/why-do-humans-speak\\\/#primaryimage\",\"url\":\"https:\\\/\\\/educationalevidence.com\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/group.jpg\",\"contentUrl\":\"https:\\\/\\\/educationalevidence.com\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/group.jpg\",\"width\":900,\"height\":544,\"caption\":\"Gerd Altmann. \\\/ Pixabay\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/why-do-humans-speak\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Portada\",\"item\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Why Do Humans Speak?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/\",\"name\":\"Educational Evidence\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/#organization\",\"name\":\"Educational Evidence\",\"url\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/educationalevidence.com\\\/wp-content\\\/uploads\\\/2023\\\/07\\\/educational_evidence_logo_horitzontal_blanc_negatiu.png\",\"contentUrl\":\"https:\\\/\\\/educationalevidence.com\\\/wp-content\\\/uploads\\\/2023\\\/07\\\/educational_evidence_logo_horitzontal_blanc_negatiu.png\",\"width\":3508,\"height\":1090,\"caption\":\"Educational Evidence\"},\"image\":{\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/en\\\/#\\\/schema\\\/person\\\/91a8797f56f6a2e7ba6fd6297739bbf1\",\"name\":\"educational EVIDENCE\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/educationalevidence.com\\\/wp-content\\\/litespeed\\\/avatar\\\/e9888a11dc51b117a0209ebd4a5f884d.jpg?ver=1776243515\",\"url\":\"https:\\\/\\\/educationalevidence.com\\\/wp-content\\\/litespeed\\\/avatar\\\/e9888a11dc51b117a0209ebd4a5f884d.jpg?ver=1776243515\",\"contentUrl\":\"https:\\\/\\\/educationalevidence.com\\\/wp-content\\\/litespeed\\\/avatar\\\/e9888a11dc51b117a0209ebd4a5f884d.jpg?ver=1776243515\",\"caption\":\"educational EVIDENCE\"},\"sameAs\":[\"https:\\\/\\\/educationalevidence.com\\\/\"],\"url\":\"\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Why Do Humans Speak? - Educational Evidence","description":"Most ideologies and religions urge us to kneel before the marvel of our capacity for abstract thought, as if it were a perfect gift from providence or evolution. Yet if we are to be logical and objective, we must acknowledge that we think more emotionally than rationally\u2014in other words, they made us swallow it hook, line, and sinker. Abstract thought has not evolved purely for our benefit; quite the contrary, it ended up landing us with a bunch of headaches.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/educationalevidence.com\/en\/why-do-humans-speak\/","og_locale":"en_US","og_type":"article","og_title":"Why Do Humans Speak? - Educational Evidence","og_description":"Most ideologies and religions urge us to kneel before the marvel of our capacity for abstract thought, as if it were a perfect gift from providence or evolution. Yet if we are to be logical and objective, we must acknowledge that we think more emotionally than rationally\u2014in other words, they made us swallow it hook, line, and sinker. Abstract thought has not evolved purely for our benefit; quite the contrary, it ended up landing us with a bunch of headaches.","og_url":"https:\/\/educationalevidence.com\/en\/why-do-humans-speak\/","og_site_name":"Educational Evidence","article_published_time":"2025-06-12T07:02:08+00:00","article_modified_time":"2025-09-03T11:45:51+00:00","og_image":[{"width":900,"height":544,"url":"https:\/\/educationalevidence.com\/wp-content\/uploads\/2025\/05\/group.jpg","type":"image\/jpeg"}],"author":"educational EVIDENCE","twitter_card":"summary_large_image","twitter_misc":{"Written by":"David Rabad\u00e0 i Vives","Est. reading time":"8 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/educationalevidence.com\/en\/why-do-humans-speak\/#article","isPartOf":{"@id":"https:\/\/educationalevidence.com\/en\/why-do-humans-speak\/"},"author":{"name":"educational EVIDENCE","@id":"https:\/\/educationalevidence.com\/en\/#\/schema\/person\/91a8797f56f6a2e7ba6fd6297739bbf1"},"headline":"Why Do Humans Speak?","datePublished":"2025-06-12T07:02:08+00:00","dateModified":"2025-09-03T11:45:51+00:00","mainEntityOfPage":{"@id":"https:\/\/educationalevidence.com\/en\/why-do-humans-speak\/"},"wordCount":1316,"commentCount":0,"publisher":{"@id":"https:\/\/educationalevidence.com\/en\/#organization"},"image":{"@id":"https:\/\/educationalevidence.com\/en\/why-do-humans-speak\/#primaryimage"},"thumbnailUrl":"https:\/\/educationalevidence.com\/wp-content\/uploads\/2025\/05\/group.jpg","keywords":["anticipating","articulated speech","S\u00e0piens","Sophisticated Abstract Thought"],"articleSection":["Science"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/educationalevidence.com\/en\/why-do-humans-speak\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/educationalevidence.com\/en\/why-do-humans-speak\/","url":"https:\/\/educationalevidence.com\/en\/why-do-humans-speak\/","name":"Why Do Humans Speak? - Educational Evidence","isPartOf":{"@id":"https:\/\/educationalevidence.com\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/educationalevidence.com\/en\/why-do-humans-speak\/#primaryimage"},"image":{"@id":"https:\/\/educationalevidence.com\/en\/why-do-humans-speak\/#primaryimage"},"thumbnailUrl":"https:\/\/educationalevidence.com\/wp-content\/uploads\/2025\/05\/group.jpg","datePublished":"2025-06-12T07:02:08+00:00","dateModified":"2025-09-03T11:45:51+00:00","description":"Most ideologies and religions urge us to kneel before the marvel of our capacity for abstract thought, as if it were a perfect gift from providence or evolution. Yet if we are to be logical and objective, we must acknowledge that we think more emotionally than rationally\u2014in other words, they made us swallow it hook, line, and sinker. Abstract thought has not evolved purely for our benefit; quite the contrary, it ended up landing us with a bunch of headaches.","breadcrumb":{"@id":"https:\/\/educationalevidence.com\/en\/why-do-humans-speak\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/educationalevidence.com\/en\/why-do-humans-speak\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/educationalevidence.com\/en\/why-do-humans-speak\/#primaryimage","url":"https:\/\/educationalevidence.com\/wp-content\/uploads\/2025\/05\/group.jpg","contentUrl":"https:\/\/educationalevidence.com\/wp-content\/uploads\/2025\/05\/group.jpg","width":900,"height":544,"caption":"Gerd Altmann. \/ Pixabay"},{"@type":"BreadcrumbList","@id":"https:\/\/educationalevidence.com\/en\/why-do-humans-speak\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Portada","item":"https:\/\/educationalevidence.com\/en\/"},{"@type":"ListItem","position":2,"name":"Why Do Humans Speak?"}]},{"@type":"WebSite","@id":"https:\/\/educationalevidence.com\/en\/#website","url":"https:\/\/educationalevidence.com\/en\/","name":"Educational Evidence","description":"","publisher":{"@id":"https:\/\/educationalevidence.com\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/educationalevidence.com\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/educationalevidence.com\/en\/#organization","name":"Educational Evidence","url":"https:\/\/educationalevidence.com\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/educationalevidence.com\/en\/#\/schema\/logo\/image\/","url":"https:\/\/educationalevidence.com\/wp-content\/uploads\/2023\/07\/educational_evidence_logo_horitzontal_blanc_negatiu.png","contentUrl":"https:\/\/educationalevidence.com\/wp-content\/uploads\/2023\/07\/educational_evidence_logo_horitzontal_blanc_negatiu.png","width":3508,"height":1090,"caption":"Educational Evidence"},"image":{"@id":"https:\/\/educationalevidence.com\/en\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/educationalevidence.com\/en\/#\/schema\/person\/91a8797f56f6a2e7ba6fd6297739bbf1","name":"educational EVIDENCE","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/educationalevidence.com\/wp-content\/litespeed\/avatar\/e9888a11dc51b117a0209ebd4a5f884d.jpg?ver=1776243515","url":"https:\/\/educationalevidence.com\/wp-content\/litespeed\/avatar\/e9888a11dc51b117a0209ebd4a5f884d.jpg?ver=1776243515","contentUrl":"https:\/\/educationalevidence.com\/wp-content\/litespeed\/avatar\/e9888a11dc51b117a0209ebd4a5f884d.jpg?ver=1776243515","caption":"educational EVIDENCE"},"sameAs":["https:\/\/educationalevidence.com\/"],"url":""}]}},"_links":{"self":[{"href":"https:\/\/educationalevidence.com\/en\/wp-json\/wp\/v2\/posts\/27830","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/educationalevidence.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/educationalevidence.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/educationalevidence.com\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/educationalevidence.com\/en\/wp-json\/wp\/v2\/comments?post=27830"}],"version-history":[{"count":10,"href":"https:\/\/educationalevidence.com\/en\/wp-json\/wp\/v2\/posts\/27830\/revisions"}],"predecessor-version":[{"id":29423,"href":"https:\/\/educationalevidence.com\/en\/wp-json\/wp\/v2\/posts\/27830\/revisions\/29423"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/educationalevidence.com\/en\/wp-json\/wp\/v2\/media\/27835"}],"wp:attachment":[{"href":"https:\/\/educationalevidence.com\/en\/wp-json\/wp\/v2\/media?parent=27830"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/educationalevidence.com\/en\/wp-json\/wp\/v2\/categories?post=27830"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/educationalevidence.com\/en\/wp-json\/wp\/v2\/tags?post=27830"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}