Reading focus
Syllabus: How Do We Develop Across the Lifespan?
Connect Sameroff’s account of person–context transactions to an actual change in care. Separate the randomized intervention comparison, the nonrandomized community comparison, and the interpretation of placement timing.
A question to consider. Which result supports a benefit of the intervention, and why would it still be insufficient to establish a universal deadline for developmental recovery?
Why this reading
Developmental differences can reflect both prior experience and selection into environments. This study uses randomized foster-care placement to examine cognitive development following early institutional care. It gives the reader a concrete way to distinguish an intervention comparison from a claim about why children initially differed.
Before you read
Distinguish random assignment from a representative sample. An intention-to-treat comparison follows assignment even when subsequent care changes. A comparison with children never institutionalized answers a different question from the randomized comparison.
Read for
- Identify which groups were formed by random assignment and which were comparison groups.
- Track the cognitive assessments over time and ask what each comparison estimates.
- Separate the placement effect from the interpretation of age-at-placement differences.
- Examine the ethical responsibilities created by a study involving children already living in institutions.
Consider afterwards
- What would make the age pattern evidence for a sensitive period rather than simply a longer exposure to foster care?
- Which parts of the intervention would have to be reproduced before expecting similar results elsewhere?
Editorial context
The reported benefits concern this intervention, population, and follow-up period. They do not establish a universal developmental deadline or identify a single caregiving mechanism. Randomizing an offer of alternative care is also different from randomly assigning children to early deprivation. Read the study's procedures and ethical account alongside its outcomes; a persuasive causal comparison does not by itself settle those ethical questions.