Book cover of The Family Firm by Emily Oster

Emily Oster

The Family Firm

Reading time icon17 min readRating icon3.7 (4,547 ratings)

Parenting isn't just an art—when approached like a business decision, backed by data, it can be a science that helps families succeed.

1. Sleep is the cornerstone of growth and learning

It turns out that sleep is not just about feeling rested. Children’s sleep directly impacts their academic performance and mental health. Research shows that kids with later bedtimes or insufficient sleep perform worse in school and are more likely to face depression. Daytime sleepiness, often overlooked, is a key indicator of whether a child is getting the sleep they need.

Studies reveal that even slight changes in sleep patterns can create significant differences. An experiment with children aged 8-12 showed that losing or gaining just an hour of sleep could impact memory and math scores, as well as emotional stability. This reveals that even within regular sleep ranges, more sleep tends to be better for children’s functioning.

For elementary school-aged children, aiming for around 11 hours of sleep per night works best. Consistent sleep routines help kids thrive academically, emotionally, and socially.

Examples

  • A study of 3,000 high school students linked late bedtimes with lower grades.
  • Children getting one hour less of sleep had more emotional outbursts and lower test scores.
  • Research highlights daytime sleepiness as a precise measure of a child’s readiness to learn.

2. Working parents impact their children in both positive and challenging ways

While the debate over working parents, particularly working mothers, is ongoing, some outcomes are clearer than others. Children of working mothers in lower-income or minority families often see academic improvements—fueled by more resources and opportunities. For high-income families, there’s a slight dip in grades as working parents have less time for enriching activities with their kids.

On the other hand, full-time working parents often see higher rates of childhood obesity within their families. Kids in these households may eat less healthy food, drink more soda, or engage in more sedentary activities. The evidence is most pronounced in wealthier families for reasons researchers haven’t fully identified yet.

Finally, the pressures on working mothers are undeniable. Juggling work and family responsibilities contributes to higher levels of stress, fatigue, and emotional frustration, although research also confirms that having both a family and a career brings happiness in its own way.

Examples

  • Research links working mothers in low-income families to better grades for their children.
  • Studies show children of full-time working parents have a higher likelihood of obesity.
  • Many working moms report feeling more frazzled and stressed than stay-at-home parents.

3. Your child’s taste preferences are shaped early—and permanently

The food choices you introduce to your child will follow them well into adulthood. A surprising study showed that even in utero, a mother’s diet influences her child’s preferences. For instance, babies of mothers who consumed a lot of carrots during pregnancy were found to like carrots significantly more as they grew up.

This influence extends into later years as kids who are consistently encouraged to eat healthy are more likely to retain those habits. College students, for instance, were found to crave and continue eating foods they’d enjoyed during their early years.

The key to developing an affinity for healthy food, like vegetables, is persistence. Research reveals that exposing kids repeatedly to a disliked vegetable can turn “yucky” into “yummy” after just a few times.

Examples

  • Babies whose mothers ate carrots during pregnancy enjoyed carrots more later.
  • College students still eat the foods they grew up loving as children.
  • Preschool children significantly increased their vegetable consumption after repeated exposure to squash and red peppers.

4. Helicopter parenting might actually support academic growth

While helicopter parenting gets a bad reputation for hovering, it’s not universally negative. Research shows that children with parents who are closely involved in their day-to-day routines, like packing their school bags, tend to perform better academically than their peers. This extra structure helps avoid missed deadlines or forgotten homework.

That said, moderation is key. Over-involvement can stifle independence, particularly as children grow older. College-age kids with overbearing parents often face anxiety and struggle with relationships.

A balanced approach, offering guidance without doing tasks for them, helps children understand responsibility while still feeling supported.

Examples

  • Studies show that high parental involvement correlates with better grades in high school.
  • Over-supportive parenting has been linked to higher anxiety and less peer engagement in college students.
  • Packing a child’s school bag helps build responsibility while keeping them organized.

5. Great teachers shape more than academics

Your child’s school experience hinges on quality teaching. Research has shown that students with excellent teachers not only excel in school but enjoy long-term life benefits. For example, kids taught by experienced kindergarten teachers often earned higher salaries 20 years later.

Small class sizes also give children an advantage, as students receive more personal attention. Additionally, in areas where education choices include charter schools, data suggests kids in charter schools perform better academically, akin to gaining six IQ points.

Engaging, personalized education makes all the difference, both academically and in terms of life outcomes.

Examples

  • Students with top-quality teachers in early years earn better incomes later in life.
  • Data shows charter school students perform better academically due to intense focus.
  • Smaller class sizes correlate with greater academic and social success.

6. Sports build discipline but carry risks

Sports offer physical benefits along with habits of discipline and teamwork that last into adulthood. Childhood participation in sports is linked to better aerobic fitness even years after the activity ends. Sports also encourage healthier eating habits, though kids often indulge more in junk food as well.

However, certain risks exist. American football and soccer, for example, top the list for child concussions, which can have lifelong effects. Parents may wish to consider safer sports, like swimming or tennis, to focus on benefits while avoiding brain injuries.

Examples

  • Swiss children retained better fitness two years after sports programs ended.
  • Football and soccer record the highest concussion rates among youth sports.
  • Athletic kids tend to eat both better and worse, reflecting mixed diet habits.

7. Screen time’s effects vary—and can harm sleep

Screens dominate kids’ lives, but their impact isn’t straightforward. Children without TVs tend to perform better academically, but primarily because they engage in other productive activities. Similarly, claims of video game violence influencing kids remain inconclusive—it’s unclear whether gaming creates aggression or attracts already aggressive individuals.

The definite downside to screens? Their interference with sleep. Kids who watch TV or use devices near bedtime suffer from both lower-quality rest and shorter sleep durations.

Examples

  • Studies link TVs in kids’ rooms to diminished sleep length and quality.
  • Research can’t confirm if violence in games creates or attracts aggression.
  • Kids using screens before bedtime sleep less across various studies.

8. Repetition helps kids adopt healthier habits

Children learn to accept or reject habits, like eating vegetables, through consistent exposure. When kids reject new foods, it’s not the end of the road—offering a food repeatedly, while modeling healthy eating yourself, helps normalize good choices over time.

Your behaviors, like sitting down to eat vegetables enthusiastically, serve as subtle but effective teaching moments.

Examples

  • Preschoolers begin enjoying vegetables after persistent trials over several weeks.
  • Parent modeling behavior influences children’s own eating choices significantly.
  • College students recognize lasting influences of childhood eating patterns.

9. Family dinner time carries unmatched emotional and behavioral benefits

Gathering for family meals isn’t just about food—it’s about cultivating connection and emotional stability. Studies show that kids who eat nightly family dinners are less prone to use tobacco or alcohol, face fewer depressive symptoms, and are more engaged academically.

Parents’ presence matters, not just because of what is said at the table but because of the environment it fosters. Shared sit-down time offers untapped value in both emotional and developmental terms.

Examples

  • Children eating with family are less likely to develop depression or eating disorders.
  • They also report stronger academic engagement compared to peers without family dinners.
  • Family dinners build emotional bonds across generations in unique ways.

Takeaways

  1. Establish consistent sleep schedules for your child and aim for about 11 hours of rest each night.
  2. Introduce new foods repeatedly and model healthy eating habits to shape lifelong preferences.
  3. Host family dinner at least a few times per week to create valuable emotional and behavioral benefits.

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