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Related Concept Videos

Introduction to Developmental Psychology01:27

Introduction to Developmental Psychology

Developmental psychology explores the changes and continuities in human abilities throughout life, encompassing physical, cognitive, linguistic, and social dimensions. Human development is not restricted to growth, but includes aspects of decline, particularly in physical abilities as individuals age. Developmental psychologists seek to understand how people change as they age and how their mental and social skills evolve.Developmental MilestonesA key concept in developmental psychology is...
Autism Spectrum Disorder01:19

Autism Spectrum Disorder

Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
Three Developmental Domains01:29

Three Developmental Domains

Human development is typically examined across three main domains: physical, cognitive, and socio-emotional. These domains represent the significant areas of change and continuity throughout the lifespan, from infancy to late adulthood.
Physical Development
Physical processes, also known as maturation, encompass the biological changes that occur across an individual's life. These changes begin with genetic inheritance and continue through various stages, including growth in height and weight,...
Piaget's Stage 1 of Cognitive Development01:14

Piaget's Stage 1 of Cognitive Development

The sensorimotor stage, the initial phase of Jean Piaget's theory of cognitive development, spans the first two years of a child's life. During this period, infants actively engage with their surroundings, building cognitive awareness through direct interaction with the world. This interaction is primarily based on sensory perception and motor actions, allowing infants to gradually understand basic physical properties and predict how objects interact within their environment.
Exploration...
Cognitive Development During Adolescence01:18

Cognitive Development During Adolescence

During adolescence, individuals experience significant cognitive development that enhances their understanding of others' emotions and thoughts, known as cognitive empathy. This period is marked by an increased ability to adapt to others' perspectives and a more nuanced understanding of others' mental states, a skill that is foundational for social problem-solving and conflict avoidance. The development of cognitive empathy relies heavily on the theory of mind — the recognition that people have...
Oppositional Defiant Disorder01:30

Oppositional Defiant Disorder

A persistent pattern of angry or irritable mood, defiant behavior, or vindictiveness characterizes Oppositional Defiant Disorder (ODD). Symptoms must occur over at least six months, involve interactions with individuals beyond siblings, and meet specific diagnostic criteria to be clinically significant. The disorder affects emotional regulation, social interactions, and behavior, often manifesting early in life and influencing long-term development and functioning.
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Articles linked to this work by shared authors, journal, and citation graph.

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Retraction notice to "Food selectivity in children with and without an autism spectrum disorder: Investigation of diagnosis and age" [Research in Developmental Disabilities 34/10 (2013) 3497-3503].

Research in developmental disabilities·2023
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Retraction notice to "How does ASD symptomology correlate with ADHD presentations?" [Research in Developmental Disabilities 35/9 (2014) 2252-2259].

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Retraction notice to "ADHD symptom prevalence and risk factors in a sample of toddlers with ASD or who are at risk for developmental delay" [Research in Developmental Disabilities 34/11 (2013) 4203-4209].

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Retraction notice to "A comparison of tantrum behavior profiles in children with ASD, ADHD and comorbid ASD and ADHD" [Research in Developmental Disabilities 34/9 (2013) 2669-2675].

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Related Experiment Video

Updated: May 30, 2026

Measuring the Functional Abilities of Children Aged 3-6 Years Old with Observational Methods and Computer Tools
11:29

Measuring the Functional Abilities of Children Aged 3-6 Years Old with Observational Methods and Computer Tools

Published on: June 20, 2020

Developmental milestones in toddlers with atypical development.

Max Horovitz1, Johnny L Matson

  • 1Department of Psychology, Louisiana State University, Baton Rouge, LA 70803, United States.

Research in Developmental Disabilities
|August 23, 2011
PubMed
Summary

Children with seizure disorders reached motor milestones like crawling and walking earlier than those with Down syndrome or cerebral palsy. First words were spoken at similar ages across all developmental disability groups studied.

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Area of Science:

  • Developmental Pediatrics
  • Neurodevelopmental Disorders
  • Child Psychology

Background:

  • Developmental milestones are crucial indicators of healthy child development.
  • Infants and toddlers with developmental disabilities often exhibit varied attainment patterns.
  • Understanding these differences informs early intervention strategies.

Purpose of the Study:

  • To compare the attainment of key developmental milestones in infants and toddlers with specific developmental disabilities.
  • To identify differences in motor and language development across diagnostic groups.

Main Methods:

  • Comparative analysis of developmental milestone attainment in 162 infants and toddlers.
  • Study groups included Down syndrome, Cerebral Palsy, Global Developmental Delay, Premature birth, and Seizure Disorder.
  • Data collected on age of onset for crawling, walking, and first words.

Main Results:

  • Toddlers with Seizure Disorder crawled and walked significantly earlier than those with Down Syndrome and Cerebral Palsy.
  • Toddlers with Seizure Disorder and Premature birth walked earlier than those with Down Syndrome.
  • No significant differences were observed in the age of first words spoken across groups.

Conclusions:

  • Motor development, specifically crawling and walking, varies significantly among different developmental disabilities.
  • Seizure Disorder and Prematurity may be associated with earlier motor milestone achievement compared to certain genetic or congenital conditions.
  • Language development, as indicated by first words, appears less differentiated across these specific developmental disabilities in early childhood.