Understand Your Baby’s Temperament to Improve Sleep

temperament Apr 15, 2025
 Baby with expressive face lying in crib, showing signs of unique temperament affecting sleep patterns

Struggling with your baby’s sleep? You’re not alone—and it might not be what you think. What if getting better naps and longer nights isn’t just routines or schedules, but understanding who your baby is at their core?

Temperament plays a huge role in how your little one reacts to sleep challenges. In this post, I’ll show you exactly how learning about your baby’s unique temperament can help you create a sleep plan that actually works—for your baby, not just some generic advice.

If you’re feeling overwhelmed, don’t worry. Start simple with my free Night Waking Guide packed with actionable tips to help you tackle those middle-of-the-night wake-ups.

What Is Temperament?

Temperament is your baby’s natural personality—their built-in way of reacting to the world around them. It’s not “good” or “bad,” but it can explain so much about how your baby responds to routines, sleep changes, and transitions.

The fascinating part? Temperament is stable from birth. You can’t change it, but you can learn to work with it.

The 9 Temperament Traits That Affect Sleep

Here are the nine traits researchers use to understand temperament—and how they matter for sleep:

Activity Level: Constant mover or more chilled out?
Regularity: Like clockwork, or unpredictable patterns?
Adaptability: Quick to adjust or slow to warm up?
Approach: Eager or cautious in new situations?
Physical Sensitivity: Easily startled or super chill?
Distractibility: Laser-focused or pulled in every direction?
Mood: Mostly smiley or often grumpy?
Persistence/Attention Span: Quick to give up or hang in there?
Intensity: Big feelings or more even-tempered?

Most babies are a blend, but knowing which way your baby leans can help you predict and navigate sleep ups and downs.

Real Talk: How Temperament Affects Sleep

Temperament doesn’t cause sleep problems, but it shapes how your baby reacts to sleep situations.

✶ A low-adaptability baby might resist bedtime changes.
✶ A high-intensity baby could react BIG to overtiredness.
✶ A low-regularity baby may nap at unpredictable times.

That’s why a “one-size-fits-all” approach to sleep just doesn’t work. Your baby isn’t a robot—and neither are you!!

Remember…Your Temperament Matters Too

Here’s something most sleep advice misses: how you show up matters. If you’re naturally adaptable and calm, sleep challenges might roll off your back. But if you’re feeling anxious, exhausted, or stretched thin—it’s totally normal to feel overwhelmed.

That’s why my sleep courses include mindset tools and positive parenting strategies. Because you deserve support too.

Breaking the Sleep Struggle Cycle

If your baby has a feisty temperament, that doesn’t mean you’re in for months of chaos. Research shows that positive parenting can reduce sleep challenges, especially for more sensitive or intense babies.

Here’s how I can help:

Newborn Sleep Foundations: For 0–3 months

Learn to create a soothing sleep environment, read sleepy cues, and gently shape nights from the start.

Cozy Baby Sleep Course: For 4–24 months

Tackle night wakings, regressions, and short naps with flexible, step-by-step strategies that suit your baby’s temperament.

Cozy Toddler Sleep Guide: For 2+ years

Set boundaries with love, manage big feelings, and create a sleep routine that sticks.

Not Ready for a Full Course? Grab the Freebie

Start small with my FREE Night Waking Guide. You’ll learn practical steps to reduce night wakings and help your baby sleep more restfully.

Final Word: Temperament Isn’t Everything—But It Matters

Sleep isn’t just about wake windows and blackout curtains. It’s about understanding your baby as a whole human—with needs, patterns, and yes… their own little personality.

You’re not doing it wrong. You just haven’t had support that truly gets your baby (and you).

You’ve got this ok!! And if you need support along the way, I’m here to help mate xx

Citations: 

Atkinson, E., Vetere, A., & Grayson, K. (1995). Sleep disruption in young children. The influence of temperament on the sleep patterns of pre‐school children. Child: care, health and development, 21(4), 233-246.

Gilissen, R., Bakermans-Kranenburg, M. J., van IJzendoorn, M. H., & van der Veer, R. (2008). Parent–child relationship, temperament, and physiological reactions to fear-inducing film clips: Further evidence for differential susceptibility. Journal of Experimental Child Psychology, 99(3), 182-195.

Goyal, D., Gay, C., & Lee, K. (2009). Fragmented maternal sleep is more strongly correlated with depressive symptoms than infant temperament at three months postpartum. Archives of women's mental health, 12(4), 229-237.

Hafstad, G. S., Abebe, D. S., Torgersen, L., & von Soest, T. (2013). Picky eating in preschool children: The predictive role of the child's temperament and mother's negative affectivity. Eating behaviors, 14(3), 274-277.

Halpern, L. F., Anders, T. F., Coll, C. G., & Hua, J. (1994). Infant temperament: Is there a relation to sleep-wake states and maternal nighttime behavior?. Infant Behavior and Development, 17(3), 255-263.

Mesman, J., Stoel, R., Bakermans-Kranenburg, M. J., van IJzendoorn, M. H., Juffer, F., Koot, H. M., & Alink, L. R. (2009). Predicting growth curves of early childhood externalizing problems: Differential susceptibility of children with difficult temperament. Journal of Abnormal Child Psychology, 37(5), 625-636.

Moore, M., Slane, J., Mindell, J. A., Burt, S. A., & Klump, K. L. (2011). Sleep problems and temperament in adolescents. Child: care, health and development, 37(4), 559-562.

Karreman, A., de Haas, S., van Tuijl, C., van Aken, M. A., & Deković, M. (2010). Relations among temperament, parenting and problem behavior in young children. Infant behavior and development, 33(1), 39-49.

Keener, M. A., Zeanah, C. H., & Anders, T. F. (1988). Infant temperament, sleep organization, and nighttime parental interventions. Pediatrics, 81(6), 762-771.

Putnam, S. P., Sanson, A. V., & Rothbart, M. K. (2002). Child temperament and parenting. In M. H. Bornstein (Ed.), Handbook of parenting: Children and parenting (p. 255–277). Lawrence Erlbaum Associates Publishers.

Rettew, D. C., Stanger, C., McKee, L., Doyle, A., & Hudziak, J. J. (2006). Interactions between child and parent temperament and child behavior problems. Comprehensive psychiatry, 47(5), 412-420.

Rothbart, M. K., Derryberry, D., & Hershey, K. (2000). Stability of temperament in childhood: Laboratory infant assessment to parent report at seven years. Temperament and personality development across the life span, 85-119.

Sadeh, A., & Anders, T. F. (1993). Infant sleep problems: Origins, assessment, interventions. Infant mental health Journal, 14(1), 17-34.

Spruyt, K., Aitken, R. J., So, K., Charlton, M., Adamson, T. M., & Horne, R. S. (2008). Relationship between sleep/wake patterns, temperament and overall development in term infants over the first year of life. Early human development, 84(5), 289-296.

Stams, G. J. J., Juffer, F., & Van IJzendoorn, M. H. (2002). Maternal sensitivity, infant attachment, and temperament in early childhood predict adjustment in middle childhood: The case of adopted children and their biologically unrelated parents. Developmental psychology, 38(5), 806.

Vitaro, F., Barker, E. D., Boivin, M., Brendgen, M., & Tremblay, R. E. (2006). Do early difficult temperament and harsh parenting differentially predict reactive and proactive aggression?. Journal of abnormal child psychology, 34(5), 681-691.

Yaman, A., Mesman, J., van IJzendoorn, M. H., & Bakermans-Kranenburg, M. J. (2010). Parenting and toddler aggression in second-generation immigrant families: The moderating role of child temperament. Journal of Family Psychology, 24(2), 208.

Zentner, M., & Bates, J. E. (2008). Child temperament: An integrative review of concepts, research programs, and measures. International Journal of Developmental Science, 2(1-2), 7-37.

Van IJzendoorn, M. H. V., & Bakermans-Kranenburg, M. J. (2012). Integrating temperament and attachment: The differential susceptibility paradigm. In M. Zentner & R. L. Shiner (Eds.), Handbook of temperament (p. 403–424). The Guilford Press.

 

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