A Recent Study Revealed That Children Who Had Done Most

question 144

Multiple Choice

A recent study revealed that children who had done most of their sleeping at night during infancy had higher executive function at age four. Researchers hypothesized that this happened due to:

• A) sleep's role in brain maturation and memory consolidation.
• B) the fact that the infants' circadian rhythms were on point.
• C) the finding that the night sleeping made the infants' parents happier.
• D) decreased REM sleep.

---

Definitions:

Monopolistically Competitive

A market structure where many firms sell products that are similar but not identical, allowing for some degree of market power and differentiated competition.

Excess Capacity

The failure to produce enough to minimize average total cost; characteristic of monopolistically competitive firms.

Average Total Cost

The total cost of production (fixed plus variable costs) divided by the total quantity produced.

Marginal Cost

This represents the extra expense of manufacturing or producing an additional item, highlighting the concept of decreasing efficiency with increased production volume.