Psychology: Cognitive Development Worksheet

Question 1

A 4-year-old child says that a tall, narrow glass has more juice than a short, wide glass, even after watching the same amount of juice poured from one glass to the other. Identify the Piagetian concept illustrated and explain what this suggests about the child's thinking.

Accepted Answer

The child is showing difficulty with conservation. This suggests the child is likely in the preoperational stage and is influenced by the most noticeable perceptual feature, such as height, rather than mentally reversing the transformation.

Question 2

Compare Piaget's concept of readiness with Vygotsky's concept of the zone of proximal development. Explain how each theory would guide a teacher's decision about when to introduce a difficult new skill.

Accepted Answer

Piaget's concept of readiness suggests that instruction should match the child's current stage of cognitive development. Vygotsky's zone of proximal development suggests that a teacher can introduce a difficult skill when the child cannot yet do it alone but can succeed with guidance, scaffolding, or collaboration.

Question 3

A researcher gives children a false-belief task. A child watches Maya put a toy in a box and leave the room. While Maya is gone, another person moves the toy to a basket. The child is asked where Maya will look first. What ability is being tested, and what answer would show that the child has developed it?

Accepted Answer

The task tests theory of mind, especially the ability to understand that another person can hold a belief that is false. A child who has developed this ability would say that Maya will look in the box because Maya did not see the toy being moved.

Question 4

Explain how improvements in working memory can affect children's performance on multi-step math problems.

Accepted Answer

Improvements in working memory help children hold numbers, rules, and intermediate results in mind while carrying out several steps. This can make multi-step math problems easier because the child can coordinate information without losing track of the goal.

Question 5

A 7-year-old uses a memory strategy by repeating a phone number several times, while a 4-year-old does not use the strategy spontaneously. Name the strategy and explain why this difference matters for cognitive development.

Accepted Answer

The strategy is rehearsal. The difference matters because older children are more likely to use deliberate strategies to improve memory, showing development in metacognition, attention control, and information processing.

Question 6

In a study, children who hear more complex language at home tend to develop stronger vocabulary and narrative skills. Explain one likely mechanism for this association and one reason researchers should be cautious about making a causal claim.

Accepted Answer

One likely mechanism is that complex language provides children with richer input, including varied vocabulary, grammar, and explanations. Researchers should be cautious about causal claims because family income, parent education, child temperament, or genetic influences may also contribute to the association.

Question 7

A toddler calls every four-legged animal a dog. Later, after seeing cats and cows, the toddler begins using more specific labels. Use Piaget's terms assimilation and accommodation to explain this change.

Accepted Answer

At first, the toddler assimilates new animals into an existing category by calling them dogs. Later, the toddler accommodates by changing the category system to distinguish dogs from cats, cows, and other animals.

Question 8

Describe how executive function contributes to school readiness. Include at least two components of executive function in your answer.

Accepted Answer

Executive function contributes to school readiness by helping children follow directions, control impulses, shift attention, and persist on tasks. Important components include inhibitory control, working memory, and cognitive flexibility.

Question 9

A cross-sectional study finds that 70-year-olds perform worse than 25-year-olds on a speeded reasoning task. Explain one limitation of using this result to conclude that reasoning declines with age.

Accepted Answer

One limitation is that a cross-sectional study compares different age groups at one time, so cohort differences may influence the results. The older adults may have had different educational, cultural, or health experiences than the younger adults, which could affect performance independently of aging.

Question 10

A longitudinal study follows the same participants from age 20 to age 80. Identify one advantage and one disadvantage of this design for studying cognitive development.

Accepted Answer

An advantage is that a longitudinal study can track within-person change over time, making it useful for studying developmental trajectories. A disadvantage is that it can be expensive, time-consuming, and affected by participant dropout or practice effects.

Question 11

Interpret this developmental pattern: processing speed improves rapidly during childhood, peaks in early adulthood, and often declines in later adulthood. Explain how this pattern could affect performance on cognitive tasks.

Accepted Answer

This pattern suggests that people become faster at taking in and responding to information through childhood and adolescence, but speed may slow in later adulthood. Slower processing speed can reduce performance on timed tasks, even when knowledge or reasoning ability remains strong.

Question 12

Explain why habituation and dishabituation methods are useful for studying infant cognition.

Accepted Answer

Habituation and dishabituation are useful because infants cannot explain what they perceive or remember in words. If an infant looks less at a repeated stimulus and then looks more at a new stimulus, researchers infer that the infant detected a difference and formed some memory of the original stimulus.

Question 13

A teenager is better than a younger child at planning a long-term project, resisting distractions, and evaluating possible consequences. Explain how brain development may contribute to these changes.

Accepted Answer

These changes are partly related to development of the prefrontal cortex and its connections with other brain systems. As these networks mature, adolescents often improve in planning, impulse control, decision-making, and monitoring their own behavior.

Question 14

Evaluate the claim: Cognitive development occurs in fixed stages that all children pass through in exactly the same way. Use evidence or concepts from modern developmental psychology.

Accepted Answer

The claim is too rigid. Piaget's stage theory identified important patterns, but modern research shows that development can be more gradual, domain-specific, culturally influenced, and affected by task demands. Children may show advanced reasoning in one context and less advanced reasoning in another.

Question 15

Design a brief study to test whether guided practice improves children's performance on a problem-solving task. Identify the independent variable, dependent variable, and one control needed for a fair test.

Accepted Answer

A fair study could randomly assign children to a guided-practice group or a no-guidance comparison group, then give both groups the same problem-solving task. The independent variable is the type of practice, the dependent variable is performance on the task, and one control is using the same task instructions and testing time for both groups.

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Psychology: Cognitive Development

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