Explores Cause and Effect
Infant or toddler acts on objects to make something happen and repeats the action.
Ages 8–20 months
Why it matters
Discovering that "I did that" is the root of scientific thinking. When a baby drops, pushes, or pops a toy and watches the result, they learn their actions have predictable consequences, building the early reasoning that later becomes prediction and testing.
What mastery looks like
- Repeats an action on purpose to produce the same result, such as dropping a toy again and again.
- Shows anticipation, such as looking toward where a ball will roll before it moves.
How to observe it
- During play, does the child intentionally repeat an action to make an effect happen again?
- Does the child show surprise or delight at a result, then try to recreate it?
Accessibility
- Offer cause-and-effect toys with sound, light, or texture so the effect is reachable through more than one sense.
Safety
- Use objects too large to be swallowed and supervise to prevent mouthing of small parts.
Activities
Evidence
- CDC "Learn the Signs. Act Early." Developmental Milestones — U.S. Centers for Disease Control and Prevention · 2022 · U.S. Centers for Disease Control and Prevention
Early Atlas