Research

The research behind FocusBridge

FocusBridge is a research-based approach to homework and focus at home. Each rule a family sees, from how long a block of focus lasts to when a Focus Break comes, is informed by published research about attention, breaks and homework. This page puts each rule next to the research behind it, so you can read it yourself.

A word of honesty up front

Research points the way, but no study sets an exact number of minutes for every student. Where the research gives a range, we picked a number inside it and say so. FocusBridge itself has not been studied yet; we will share what our pilots show when they are done.

Homework is done in blocks, shorter for younger students

The rule. No block of focus runs longer than 30 minutes in grades 6 to 8, 45 minutes in grades 9 to 12, or 50 minutes in college. A longer assignment is split into blocks, with a Focus Break between them.

Why

Brief breaks may keep attention from fading. In a 50-minute laboratory attention task with 84 college students, the group that briefly switched to a different task twice held its performance steady, while the groups that worked straight through declined. (Ariga and Lleras, 2011)
The ability to hold attention keeps growing through the teen years. A study of about 10,400 people aged 10 to 70 found sustained attention rose quickly from 10 to 16, then more slowly, and peaked in the early 40s. Giving younger students shorter blocks is our design choice, built on that finding. (Fortenbaugh et al., 2015)
You may have heard that attention lasts only 10 to 15 minutes. A review of lecture studies at university found the primary data do not support that limit. So we do not claim a fixed attention span; block lengths by age are our own choice. (Bradbury, 2016)

What the research doesn't settle: The exact minutes. 30, 45 and 50 are our choices within what these studies support.

Focus Breaks are planned, not left to chance

The rule. The plan decides when a Focus Break comes, so the student doesn't have to.

Why

In a study of 87 university students, those given fixed breaks (3 minutes per 12 of work, or 6 per 24) reported less fatigue and more concentration and motivation than those who chose their own breaks. (Biwer et al., 2023)

Focus Breaks are short, and longer after a long stretch

The rule. 5 minutes after a block of 30 minutes or less, 10 minutes after a longer block, and 20 minutes once 2 hours of work are done.

Why

A combined analysis of 22 study samples found short breaks of 10 minutes or less give small boosts in energy and lower tiredness. For very demanding work the authors suggest breaks longer than 10 minutes may be needed, but did not test it. (Albulescu et al., 2022)

What the research doesn't settle: The exact break lengths. 5, 10 and 20 minutes are our choices.

Move during a Focus Break, rather than scroll

The rule. The Focus Break screen suggests standing up, stretching or getting a drink.

Why

In an experiment with 414 undergraduates, those who spent a mid-task break on a phone solved about 22% fewer problems afterward than the other groups combined. (Kang and Kurtzberg, 2019)
In a review of 16 studies of children aged 6 to 13, active breaks improved one kind of attention, picking out what matters (a moderate effect from four small studies), with no clear change in the other measures. (Infantes-Paniagua et al., 2021)

Each Focus Break starts with a look back and ahead; college work is spread across days

The rule. Each Focus Break opens by asking: what did you just finish, and what's next? In college, a big assignment or exam is spread into blocks over the days before it's due, instead of one long night.

Why

A major review of ten learning techniques rated spreading practice over time and testing yourself as the most useful, and rereading and highlighting as least useful. The look-back question itself is our design choice, not something that review tested. (Dunlosky et al., 2013)

A calm note when a night runs long

The rule. When a night's homework passes 90 minutes in grades 6 to 8, or 2 hours in high school and college, the parent sees a calm note suggesting that, if it happens often, it may be worth a word with the teachers. When work can be done ahead, the plan spreads it so nights stay under the same limit.

Why

A research review of more than 60 U.S. studies found homework linked to achievement mostly in grades 7 to 12; Duke's release summarizing it says little added benefit past about two hours a night for high school. These are associations, not proof of cause. Separately, the National PTA and NEA recommend about 10 minutes a night per grade (so about 60 in 6th grade); that is a guideline, not a finding of this review. (Cooper, Robinson and Patall, 2006)
In a study of 7,725 Spanish students (average age about 14), about an hour a day was an efficient amount; gains above about 70 minutes were small, and results peaked around 90 to 100 minutes and then declined. These are self-reported associations. (Fernández-Alonso et al., 2015)
In a survey of 4,317 students in 10 high-performing California high schools, where students averaged about 3 hours a night, 56% named homework as a main source of stress. (Galloway, Conner and Pope, 2013)

What the research doesn't settle: The exact thresholds. No study sets 90 minutes for middle school or 2 hours for college; they are our choices inside the ranges above.

Families see how much homework is left tonight

The rule. Each child's picture shows the focus time left tonight, so a family can see a late night coming.

Why

Children aged 6 to 12 are recommended 9 to 12 hours of sleep, and teenagers 8 to 10. Seeing a long night coming lets a family start earlier. (American Academy of Sleep Medicine, 2016)

Coming in Campus Focus: starting times that fit your own week

Coming

The rule. When a college student sets up Campus Focus, a few short questions adjust the standard time for each kind of assignment. The first asks how long their last paper took, start to finish. The plan then allows for what they remember, and starts big assignments earlier.

Why

People plan too little time for big tasks, even when they think about the worst case. Honors-thesis students predicted 34 days and took 56; only 30% finished by their own estimate, and only 49% by their worst-case guess. (Buehler, Griffin and Ross, 1994)
Recalling a similar past task helped. In another study of 123 undergraduates, 29% finished by their own prediction with no prompt, and 60% did when first asked to recall a similar past task and relate it to the new one. (Same paper, Study 4)
Having done the same kind of task before reduced the bias; being told exactly how long a past task took did not. That is why the question asks about the same kind of work. (Thomas and König, 2018)

What the research doesn't settle: No study publishes a rule that turns an answer into minutes. How much the plan adds, and how much each answer changes it, are our design choices, kept small and visible, and a student's own changes replace them. The habit questions (putting things off, losing focus, other things crowding out school work) are our own plain wording, informed by ideas in the Brief Self-Control Scale (Tangney, Baumeister and Boone, 2004) and the Pure Procrastination Scale (Steel, 2010; six-country study by Svartdal et al., 2016). They are not those scales, and their answers are not scored as a trait.

Sources

Albulescu, P., et al. (2022). "Give me a break!" A systematic review and meta-analysis on the efficacy of micro-breaks. PLOS ONE. Summary.
American Academy of Sleep Medicine (2016). Pediatric sleep duration recommendations (Paruthi et al., Journal of Clinical Sleep Medicine 12(6):785-786), endorsed by the American Academy of Pediatrics. AASM statement.
Ariga, A., and Lleras, A. (2011). Brief and rare mental "breaks" keep you focused. Cognition. University of Illinois release.
Biwer, F., Wiradhany, W., Oude Egbrink, M., and De Bruin, A. (2023). Understanding effort regulation: Comparing "Pomodoro" breaks and self-regulated breaks. British Journal of Educational Psychology. Maastricht University record.
Bradbury, N. A. (2016). Attention span during lectures: 8 seconds, 10 minutes, or more? Advances in Physiology Education. PubMed.
Buehler, R., Griffin, D., and Ross, M. (1994). Exploring the "planning fallacy": Why people underestimate their task completion times. Journal of Personality and Social Psychology. Paper.
Cooper, H., Robinson, J. C., and Patall, E. A. (2006). Does homework improve academic achievement? Review of Educational Research. Duke University release.
Dunlosky, J., et al. (2013). Improving students' learning with effective learning techniques. Psychological Science in the Public Interest. APS summary.
Fernández-Alonso, R., Suárez-Álvarez, J., and Muñiz, J. (2015). Adolescents' homework performance in mathematics and science: Personal factors and teaching practices. Journal of Educational Psychology. University of Oviedo record.
Fortenbaugh, F. C., et al. (2015). Sustained attention across the life span in a sample of 10,000. Psychological Science. Article.
Galloway, M., Conner, J., and Pope, D. (2013). Nonacademic effects of homework in privileged, high-performing high schools. Journal of Experimental Education. Stanford release.
Infantes-Paniagua, A., et al. (2021). Active school breaks and students' attention: A systematic review with meta-analysis. Brain Sciences. Full text.
Kang, S., and Kurtzberg, T. R. (2019). Reach for your cell phone at your own risk: The cognitive costs of media choice for breaks. Journal of Behavioral Addictions. Times Higher Education summary.
Steel, P. (2010), Pure Procrastination Scale; Svartdal, F., et al. (2016). On the measurement of procrastination: Comparing two scales in six European countries. Frontiers in Psychology. Article.
Tangney, J. P., Baumeister, R. F., and Boone, A. L. (2004). High self-control predicts good adjustment, less pathology, better grades, and interpersonal success. Journal of Personality. Brief Self-Control Scale.
Thomas, K. E., and König, C. J. (2018). Knowledge of previous tasks: Task similarity influences bias in task duration predictions. Frontiers in Psychology. Article.