The science

Built around evidence. Measuring what we build.

haal is designed around a body of peer-reviewed research on parental mental load, family routines, child development and behaviour change. This page sets out that evidence — what it tells us, what it does not, and what we are actively measuring through our research programme.

Parental mental load

The invisible work of running a family

Family coordination involves a distinct layer of cognitive labour — anticipating, deciding and monitoring, running constantly in the background. [1,2] A 31-study review confirms it is real, measurable, and falls disproportionately on mothers. [3]

Mothers spend roughly twice as long as fathers on this thinking work, and carrying a disproportionate share is linked to lower wellbeing. [4,5] Making the load too visible can itself feel burdensome — which is why haal surfaces it calmly and selectively, rather than all at once. [6]

FindingWhat it means in plain EnglishSource
31-study systematic review establishes cognitive labour as a distinct constructThe planning and tracking side of family life is real, measurable and separate from physical household workReich-Stiebert et al., 2023 [3]
Mothers carry ~2× the cognitive household work of fathersOn average, mothers spend twice as long as fathers on the thinking before the doingAviv et al., 2025 [4]
Disproportionate invisible load linked to lower wellbeing and relationship satisfactionCarrying an unequal share of unseen work has documented consequences for health and happinessCiciolla & Luthar, 2019 [5]
High mental load crowds out space for the rest of lifeCognitive overload has costs beyond the household — which is why haal aims to lighten load, not amplify itWeeks, 2025 [6]
Child development

Why structure at home matters for children

Predictable, supportive family routines are linked to better child outcomes across cognitive, emotional, social and academic development. [7] The WHO Nurturing Care Framework names responsive caregiving and caregiver capacity as foundational to children reaching their potential [8]— which is why haal's “survive and thrive” design supports the parent and the child together.

Behaviour change

Why well-timed reminders do more than remind

Implementation intentions — linking a plan to a specific moment and cue — significantly improve follow-through, roughly doubling goal achievement across studies of more than 8,750 people. [9] Well-timed, contextual reminders are also processed more automatically by the brain, making them easier to act on. [10]

haal's reminders are built around this: contextual, specific and well-timed — not just alerts.

The Growth Map

How children grow: the research behind the haal Growth Map

haal's Growth Map organises child development into ten domains. These domains are not invented categories — they reflect constructs that are well-established in the developmental psychology and education literature, each with its own evidence base.

haalGrowth Map

Curiosity

The drive to explore, ask questions and wonder. Grounded in research on intrinsic motivation and play-based learning — the conditions that sustain, rather than suppress, a child's natural drive to explore.

Curiosity

The drive to explore, ask questions and wonder. Grounded in research on intrinsic motivation and play-based learning — the conditions that sustain, rather than suppress, a child's natural drive to explore.

Creativity

The capacity to imagine, experiment and express — sustained by the same research on intrinsic motivation and play-based learning as curiosity.

Confidence

Believing in your own ability to try, fail and try again. Supported by research on parental self-efficacy as a modifiable outcome, and on how mastery experiences build children's self-belief. [15, 16]

Emotional Awareness

Recognising and naming what you feel. Part of social-emotional learning (SEL) — one of the best-evidenced areas of child development: a 213-study meta-analysis of 270,000 children found SEL lifted academic scores by 11 percentile points. [11, 12]

Social Connection

Building warm, cooperative relationships with others. Shares its evidence base with Emotional Awareness — the same 213-study SEL meta-analysis links relational skills to stronger academic and emotional outcomes. [11, 12]

Communication

Expressing ideas and understanding others clearly. Develops significantly through shared, interactive reading — responsive, back-and-forth reading meaningfully improves vocabulary and comprehension. [14]

Focus and Perseverance

Staying with a task and returning to it after difficulty. Draws on research into self-regulation and goal-directed behaviour — among the most robust predictors of long-term outcomes.

Physical Confidence

Trusting the body to move, try and explore. Shares its evidence base with Confidence — mastery experiences and physical competence play a measurable role in how children see themselves. [15, 16]

Independence

Making choices and taking on age-appropriate responsibility. A 2024 cross-cultural analysis found parental autonomy support consistently predicts stronger child wellbeing, across cultures and ages. [13]

Values and Character

Developing a stable sense of self and right and wrong. Shares its evidence base with Independence — the autonomy-supportive parenting research behind how children build a stable sense of self. [13]

Sources

See every source behind haal's evidence layer.

All sixteen references, with plain-English notes on why each one matters.

View references