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Characteristics and Causes of Students with Intellectual and Developmental Disabilities

Three Characteristics:

Three Causes:

 Effective Teaching and Social Skill Strategies

Social Stories

Use simple narratives with visuals to teach appropriate social behaviors and expectations in different settings.

Explicit Instruction with Repetition

Teach academic concepts clearly and directly, and reinforce them through frequent review and practice.

Peer Buddy Systems

Pair students with helpful classmates to model appropriate behavior and provide social interaction opportunities.

Visual Supports

Use visual schedules, picture prompts, and graphic organizers to support comprehension and routine-following.

Positive Reinforcement

Provide immediate, meaningful rewards (verbal praise, stickers, extra activity time) to encourage desired behaviors.

Task Analysis

Break complex tasks into smaller, manageable steps to help students master each part independently.

Birth Complications or Early Childhood Illnesses – Lack of oxygen at birth or infections like meningitis can result in developmental delays.

Prenatal Exposure – Alcohol, drugs, or infections during pregnancy can affect brain development.

Genetic Conditions – Disorders like Down syndrome or Fragile X syndrome can lead to intellectual disabilities.

Social Skills Deficits – Students often have difficulty understanding social cues, forming relationships, or managing emotions in group settings.

Communication Challenges – They may have limited vocabulary, trouble understanding language, or difficulties with expressive communication.

Delayed Cognitive Development – Students may struggle with reasoning, memory, problem-solving, and learning new skills.

Student Disabilities