How do minds and brains change as we grow?

For: Readers beginning developmental psychology who want to connect infancy, adult change and neuroscience.

Development can be studied through what people do, how they solve a task, how their circumstances change and how the brain is organised. These are connected questions, but an answer at one level does not automatically answer the others. A useful starting point is to describe the change you want to explain before choosing a theory. Does the task require remembering instructions, making a movement, interpreting another person or distinguishing objects? The MIT child-development session introduces infancy, learning and historical stage theories through concrete topics of this kind.

Compare it with Yale’s infant-cognition lecture. The publisher overview moves from Piaget’s approach to later research on infants, then asks how different kinds of development relate. Read the theories as proposals about particular questions and evidence. Do not turn a historical teaching framework into a universal timetable for an individual child. As you follow each account, write down the task used, the ability it is meant to reveal and another reason a participant might succeed or fail.

Next broaden the timescale. MIT’s adult-development session includes cognitive, emotional and physical change across adulthood. Put its questions beside those from infancy. Some may concern the same broad ability but require different tasks or comparisons. This makes it useful to distinguish a description of an age difference from an explanation of how that difference arose. The route is an introduction to studying development, not a set of predictions about any one person’s future.

The two Human Brain lectures add a different level of explanation. Development, Nature and Nurture I asks about cortical organisation during infancy and childhood and the roles of genes and experience. Its continuation extends the discussion into adulthood. Instead of treating “nature or nurture” as a request to choose one side, ask what observation would distinguish two proposed accounts of a particular developmental change. Keep the brain measure, behavioural task and relevant experience explicit. The source descriptions establish the lectures’ questions; this guide does not independently resolve the empirical debates they discuss.

How participants enter a study also matters to the question you can ask. The Lookit tutorial describes asynchronous online developmental research and discusses barriers associated with conventional study settings. That is a useful reason to examine recruitment and task delivery. Wider possible participation does not, by itself, demonstrate a representative sample or identical measurement across settings; those remain questions for a study to investigate.

For your own paper exercise, choose one developmental ability and write two ways of observing it. Identify the instructions, response and setting each would require. Then explain a result that could arise from the measurement demands rather than a difference in the ability of interest. Finish by naming the extra comparison that would help. This connects the route’s behavioural, neural and practical perspectives without pretending that they all measure the same thing.

Next step

Compare the two introductory child-development accounts, then read the adult-development overview before the pair of Human Brain lectures. Use the Lookit description to critique the setting of a proposed study.

Limits of this route

The introductory courses date from 2007 and 2011. The Human Brain collection is from 2019, with its second development lecture explicitly labelled 2018; the Lookit tutorial is dated 2020. Source descriptions and selected course text were inspected, not full videos, current platform operation or the full developmental literature. These resources are educational, not developmental assessment or individual clinical advice.