{"id":311,"date":"2023-03-01T15:05:49","date_gmt":"2023-03-01T15:05:49","guid":{"rendered":"https:\/\/content.one.lumenlearning.com\/introductiontopsychology\/chapter\/reading-developmental-psychology\/"},"modified":"2025-12-17T19:09:27","modified_gmt":"2025-12-17T19:09:27","slug":"reading-developmental-psychology","status":"publish","type":"chapter","link":"https:\/\/content.one.lumenlearning.com\/introductiontopsychology\/chapter\/reading-developmental-psychology\/","title":{"raw":"The Psychological Domains: Learn It 4\u2014The Developmental Domain","rendered":"The Psychological Domains: Learn It 4\u2014The Developmental Domain"},"content":{"raw":"<h2>The Developmental Domain<\/h2>\r\n<p data-start=\"282\" data-end=\"464\">Why do toddlers think differently than teenagers? What\u2019s the best way to break a bad habit? These are the kinds of questions explored in the <strong data-start=\"423\" data-end=\"447\">developmental domain<\/strong> of psychology.<\/p>\r\n<section class=\"textbox keyTakeaway\">\r\n<h3>developmental psychology<\/h3>\r\n<p data-start=\"502\" data-end=\"715\"><strong data-start=\"502\" data-end=\"530\">Developmental psychology<\/strong> is the scientific study of how people grow and change across the lifespan. While early research emphasized <strong data-start=\"638\" data-end=\"661\">physical maturation<\/strong>, developmental psychologists also study changes in:<\/p>\r\n<ul data-start=\"716\" data-end=\"962\">\r\n\t<li data-start=\"716\" data-end=\"780\">\r\n<p data-start=\"718\" data-end=\"780\"><strong data-start=\"718\" data-end=\"741\">Cognitive abilities<\/strong> (thinking, memory, problem-solving).<\/p>\r\n<\/li>\r\n\t<li data-start=\"781\" data-end=\"837\">\r\n<p data-start=\"783\" data-end=\"837\"><strong data-start=\"783\" data-end=\"802\">Moral reasoning<\/strong> (understanding right and wrong).<\/p>\r\n<\/li>\r\n\t<li data-start=\"838\" data-end=\"904\">\r\n<p data-start=\"840\" data-end=\"904\"><strong data-start=\"840\" data-end=\"859\">Social behavior<\/strong> (relationships, identity, cultural roles).<\/p>\r\n<\/li>\r\n\t<li data-start=\"905\" data-end=\"962\">\r\n<p data-start=\"907\" data-end=\"962\"><strong data-start=\"907\" data-end=\"932\">Emotional development<\/strong> (self-regulation, empathy).<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/section>\r\n<p><a href=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/1509\/2017\/02\/17032408\/Screen-Shot-2017-02-16-at-4.43.08-PM.png\" target=\"_blank\" rel=\"noopener\"><img class=\"wp-image-3771 alignright\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/1509\/2017\/02\/17032408\/Screen-Shot-2017-02-16-at-4.43.08-PM.png\" alt=\"Image of five pillars, showing the biological, cognitive, developmental, social and personality, and mental and physical health.\" width=\"515\" height=\"326\" \/><\/a><\/p>\r\n<p>Early developmental psychologists laid the groundwork for understanding how we grow and change from infancy to adulthood. Their research illuminated key differences in physical, cognitive, and social abilities between young children and adults.\u00a0<\/p>\r\n<p data-start=\"997\" data-end=\"1475\">For instance, very young babies do not understand <strong data-start=\"1122\" data-end=\"1143\">object permanence<\/strong>\u2014the idea that objects continue to exist even when out of sight. While adults know that a toy hidden behind a curtain still exists, infants often act as if it has disappeared. Later research (Munakata et al., 1997) has debated the age when this ability develops, showing that Piaget\u2019s work was foundational but not the final word.<\/p>\r\n<p data-start=\"1477\" data-end=\"1685\">Today, developmental psychologists study growth from <strong data-start=\"1530\" data-end=\"1557\">infancy through old age<\/strong>, exploring topics like language acquisition, identity development, aging, and the effects of culture on lifespan development.<\/p>\r\n<h2>Behavioral Psychology<\/h2>\r\n<p data-start=\"1733\" data-end=\"1812\">Another key part of the developmental domain is <strong data-start=\"1781\" data-end=\"1809\">learning and behaviorism<\/strong>.<\/p>\r\n<section class=\"textbox keyTakeaway\">\r\n<h3>behavioral psychology<\/h3>\r\n<p data-start=\"1814\" data-end=\"2025\"><strong data-start=\"1814\" data-end=\"1839\">Behavioral psychology<\/strong> focuses on <strong data-start=\"1851\" data-end=\"1874\">observable behavior<\/strong> and how it is shaped by the environment. Behaviorists emphasize the principles of <strong data-start=\"1957\" data-end=\"1986\">learning and conditioning<\/strong>, rather than internal mental states. Key concepts include:<\/p>\r\n<ul>\r\n\t<li data-start=\"2046\" data-end=\"2075\">\r\n<p data-start=\"2048\" data-end=\"2075\">Stimulus and response<\/p>\r\n<\/li>\r\n\t<li data-start=\"2076\" data-end=\"2112\">\r\n<p data-start=\"2078\" data-end=\"2112\">Reinforcement and punishment<\/p>\r\n<\/li>\r\n\t<li data-start=\"2113\" data-end=\"2152\">\r\n<p data-start=\"2115\" data-end=\"2152\">Classical conditioning (Pavlov)<\/p>\r\n<\/li>\r\n\t<li data-start=\"2153\" data-end=\"2191\">\r\n<p data-start=\"2155\" data-end=\"2191\">Operant conditioning (Skinner)<\/p>\r\n<\/li>\r\n\t<li data-start=\"2192\" data-end=\"2232\">\r\n<p data-start=\"2194\" data-end=\"2232\">Observational learning (Bandura)<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/section>\r\n<p>Early researchers such as <strong data-start=\"2279\" data-end=\"2347\">Ivan Pavlov, John B. Watson, Edward Thorndike, and B. F. Skinner<\/strong> laid the foundation of learning theory. Today, behaviorist principles are widely applied in <strong data-start=\"2440\" data-end=\"2476\">behavior modification techniques<\/strong>, used to treat mental health issues, improve education, and support habit change.<\/p>\r\n<section class=\"textbox tryIt\">[ohm2_question height=\"250\"]3930[\/ohm2_question]<\/section>","rendered":"<h2>The Developmental Domain<\/h2>\n<p data-start=\"282\" data-end=\"464\">Why do toddlers think differently than teenagers? What\u2019s the best way to break a bad habit? These are the kinds of questions explored in the <strong data-start=\"423\" data-end=\"447\">developmental domain<\/strong> of psychology.<\/p>\n<section class=\"textbox keyTakeaway\">\n<h3>developmental psychology<\/h3>\n<p data-start=\"502\" data-end=\"715\"><strong data-start=\"502\" data-end=\"530\">Developmental psychology<\/strong> is the scientific study of how people grow and change across the lifespan. While early research emphasized <strong data-start=\"638\" data-end=\"661\">physical maturation<\/strong>, developmental psychologists also study changes in:<\/p>\n<ul data-start=\"716\" data-end=\"962\">\n<li data-start=\"716\" data-end=\"780\">\n<p data-start=\"718\" data-end=\"780\"><strong data-start=\"718\" data-end=\"741\">Cognitive abilities<\/strong> (thinking, memory, problem-solving).<\/p>\n<\/li>\n<li data-start=\"781\" data-end=\"837\">\n<p data-start=\"783\" data-end=\"837\"><strong data-start=\"783\" data-end=\"802\">Moral reasoning<\/strong> (understanding right and wrong).<\/p>\n<\/li>\n<li data-start=\"838\" data-end=\"904\">\n<p data-start=\"840\" data-end=\"904\"><strong data-start=\"840\" data-end=\"859\">Social behavior<\/strong> (relationships, identity, cultural roles).<\/p>\n<\/li>\n<li data-start=\"905\" data-end=\"962\">\n<p data-start=\"907\" data-end=\"962\"><strong data-start=\"907\" data-end=\"932\">Emotional development<\/strong> (self-regulation, empathy).<\/p>\n<\/li>\n<\/ul>\n<\/section>\n<p><a href=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/1509\/2017\/02\/17032408\/Screen-Shot-2017-02-16-at-4.43.08-PM.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3771 alignright\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/1509\/2017\/02\/17032408\/Screen-Shot-2017-02-16-at-4.43.08-PM.png\" alt=\"Image of five pillars, showing the biological, cognitive, developmental, social and personality, and mental and physical health.\" width=\"515\" height=\"326\" \/><\/a><\/p>\n<p>Early developmental psychologists laid the groundwork for understanding how we grow and change from infancy to adulthood. Their research illuminated key differences in physical, cognitive, and social abilities between young children and adults.\u00a0<\/p>\n<p data-start=\"997\" data-end=\"1475\">For instance, very young babies do not understand <strong data-start=\"1122\" data-end=\"1143\">object permanence<\/strong>\u2014the idea that objects continue to exist even when out of sight. While adults know that a toy hidden behind a curtain still exists, infants often act as if it has disappeared. Later research (Munakata et al., 1997) has debated the age when this ability develops, showing that Piaget\u2019s work was foundational but not the final word.<\/p>\n<p data-start=\"1477\" data-end=\"1685\">Today, developmental psychologists study growth from <strong data-start=\"1530\" data-end=\"1557\">infancy through old age<\/strong>, exploring topics like language acquisition, identity development, aging, and the effects of culture on lifespan development.<\/p>\n<h2>Behavioral Psychology<\/h2>\n<p data-start=\"1733\" data-end=\"1812\">Another key part of the developmental domain is <strong data-start=\"1781\" data-end=\"1809\">learning and behaviorism<\/strong>.<\/p>\n<section class=\"textbox keyTakeaway\">\n<h3>behavioral psychology<\/h3>\n<p data-start=\"1814\" data-end=\"2025\"><strong data-start=\"1814\" data-end=\"1839\">Behavioral psychology<\/strong> focuses on <strong data-start=\"1851\" data-end=\"1874\">observable behavior<\/strong> and how it is shaped by the environment. Behaviorists emphasize the principles of <strong data-start=\"1957\" data-end=\"1986\">learning and conditioning<\/strong>, rather than internal mental states. Key concepts include:<\/p>\n<ul>\n<li data-start=\"2046\" data-end=\"2075\">\n<p data-start=\"2048\" data-end=\"2075\">Stimulus and response<\/p>\n<\/li>\n<li data-start=\"2076\" data-end=\"2112\">\n<p data-start=\"2078\" data-end=\"2112\">Reinforcement and punishment<\/p>\n<\/li>\n<li data-start=\"2113\" data-end=\"2152\">\n<p data-start=\"2115\" data-end=\"2152\">Classical conditioning (Pavlov)<\/p>\n<\/li>\n<li data-start=\"2153\" data-end=\"2191\">\n<p data-start=\"2155\" data-end=\"2191\">Operant conditioning (Skinner)<\/p>\n<\/li>\n<li data-start=\"2192\" data-end=\"2232\">\n<p data-start=\"2194\" data-end=\"2232\">Observational learning (Bandura)<\/p>\n<\/li>\n<\/ul>\n<\/section>\n<p>Early researchers such as <strong data-start=\"2279\" data-end=\"2347\">Ivan Pavlov, John B. Watson, Edward Thorndike, and B. F. Skinner<\/strong> laid the foundation of learning theory. Today, behaviorist principles are widely applied in <strong data-start=\"2440\" data-end=\"2476\">behavior modification techniques<\/strong>, used to treat mental health issues, improve education, and support habit change.<\/p>\n<section class=\"textbox tryIt\"><iframe loading=\"lazy\" id=\"ohm3930\" class=\"resizable\" src=\"https:\/\/ohm.one.lumenlearning.com\/multiembedq.php?id=3930&theme=lumen&iframe_resize_id=ohm3930&source=tnh&show_question_numbers\" width=\"100%\" height=\"250\"><\/iframe><\/section>\n","protected":false},"author":20,"menu_order":22,"template":"","meta":{"_candela_citation":"[{\"type\":\"cc\",\"description\":\"Contemporary Psychology\",\"author\":\"OpenStax College\",\"organization\":\"\",\"url\":\"https:\/\/openstax.org\/books\/psychology-2e\/pages\/1-3-contemporary-psychology\",\"project\":\"\",\"license\":\"cc-by\",\"license_terms\":\"Download for free at https:\/\/openstax.org\/books\/psychology-2e\/pages\/1-introduction\"},{\"type\":\"cc\",\"description\":\"Behaviorism content\",\"author\":\"\",\"organization\":\"Boundless\",\"url\":\"https:\/\/www.boundless.com\/psychology\/textbooks\/boundless-psychology-textbook\/introduction-to-psychology-1\/theoretical-perspectives-in-modern-psychology-23\/behavioral-psychology-113-12650\/\",\"project\":\"\",\"license\":\"cc-by-sa\",\"license_terms\":\"\"},{\"type\":\"original\",\"description\":\"Modification, adaptation, and original content\",\"author\":\"\",\"organization\":\"Lumen Learning\",\"url\":\"\",\"project\":\"\",\"license\":\"cc-by\",\"license_terms\":\"\"}]","pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"part":335,"module-header":"learn_it","content_attributions":[{"type":"cc","description":"Contemporary Psychology","author":"OpenStax College","organization":"","url":"https:\/\/openstax.org\/books\/psychology-2e\/pages\/1-3-contemporary-psychology","project":"","license":"cc-by","license_terms":"Download for free at https:\/\/openstax.org\/books\/psychology-2e\/pages\/1-introduction"},{"type":"cc","description":"Behaviorism content","author":"","organization":"Boundless","url":"https:\/\/www.boundless.com\/psychology\/textbooks\/boundless-psychology-textbook\/introduction-to-psychology-1\/theoretical-perspectives-in-modern-psychology-23\/behavioral-psychology-113-12650\/","project":"","license":"cc-by-sa","license_terms":""},{"type":"original","description":"Modification, adaptation, and original content","author":"","organization":"Lumen Learning","url":"","project":"","license":"cc-by","license_terms":""}],"internal_book_links":[],"video_content":null,"cc_video_embed_content":{"cc_scripts":"","media_targets":[]},"try_it_collection":null,"_links":{"self":[{"href":"https:\/\/content.one.lumenlearning.com\/introductiontopsychology\/wp-json\/pressbooks\/v2\/chapters\/311"}],"collection":[{"href":"https:\/\/content.one.lumenlearning.com\/introductiontopsychology\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/content.one.lumenlearning.com\/introductiontopsychology\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/content.one.lumenlearning.com\/introductiontopsychology\/wp-json\/wp\/v2\/users\/20"}],"version-history":[{"count":17,"href":"https:\/\/content.one.lumenlearning.com\/introductiontopsychology\/wp-json\/pressbooks\/v2\/chapters\/311\/revisions"}],"predecessor-version":[{"id":6985,"href":"https:\/\/content.one.lumenlearning.com\/introductiontopsychology\/wp-json\/pressbooks\/v2\/chapters\/311\/revisions\/6985"}],"part":[{"href":"https:\/\/content.one.lumenlearning.com\/introductiontopsychology\/wp-json\/pressbooks\/v2\/parts\/335"}],"metadata":[{"href":"https:\/\/content.one.lumenlearning.com\/introductiontopsychology\/wp-json\/pressbooks\/v2\/chapters\/311\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/content.one.lumenlearning.com\/introductiontopsychology\/wp-json\/wp\/v2\/media?parent=311"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/content.one.lumenlearning.com\/introductiontopsychology\/wp-json\/pressbooks\/v2\/chapter-type?post=311"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/content.one.lumenlearning.com\/introductiontopsychology\/wp-json\/wp\/v2\/contributor?post=311"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/content.one.lumenlearning.com\/introductiontopsychology\/wp-json\/wp\/v2\/license?post=311"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}