BookmarkBookmarkTickBookmarkAddCheckBoxFilledCheckBoxCircleBumpCheckedFilledMedical

Bad Behavior Often Comes Before Big Progress, Psychologist Says

Looking for a silver lining to your toddler’s recent rough patch? A psychologist and mom of three explains why your child’s worst behavior is often the first sign of their biggest breakthrough.
save article
profile picture of Wyndi Kappes
By Wyndi Kappes, Associate Editor
Published August 18, 2025
mom disciplining toddler
Image: Halfpoint | Shutterstock

Every parent has those moments when it feels like their child is falling apart instead of moving forward. Maybe your once sweet and quiet kid is suddenly hitting, yelling or having daily meltdowns. It’s easy to shoulder the blame during those extra rough patches, but before you do, psychologist and mom of three Dr. Jazmine McCoy reminds parents that something big (and surprisingly positive) may actually be at work.

In a new video that’s taking off on Instagram, McCoy drops a parenting knowledge bomb: Your child’s worst behavior often happens right before their biggest breakthrough. “If your child’s behavior is getting WORSE lately, this might actually be why. Ages two to three, hitting increases as language explodes. Ages four to five, aggression peaks as they’re developing social skills. Ages seven to eight, defiance runs rampant as they are developing their own sense of identity and craving more and more independence,” she explains.

“So I want to give you this gentle offering that maybe you’re not doing anything wrong. Your child’s brain is just literally developing right before your very eyes,” she adds.

The science backs up McCoy’s point. When kids reach new milestones their ability to manage big feelings doesn’t always keep pace. That mismatch often shows up as tantrums, defiance or even regressions in skills like potty training, which they seemed to have mastered. And while it may feel less than ideal in the moment, these rough phases are actually a normal and expected part of development.

McCoy’s message struck a chord with parents in the comments, offering a much-needed silver lining to behaviors that often feel nonsensical. “I have noticed this in my daughter as well. As soon as she was done having some kind of demon phase she would have a huge growth development and that’s how I made it through the rough times,” one mom wrote. “Yes! I’ve noticed that parenting can be extra challenging during those developmental ‘leaps,’” added another therapist. “Girl we are 2.75 right now and she is testing me daily! Phew this is good to hear,” another parent shared.

If you’re navigating an especially rough patch in your child’s behavior, take heart in knowing it may be the sign of something positive just around the corner. And in the meantime? Check out these expert-recommended and parent-approved tips for managing meltdowns.

save article
Article removed.
Name added. View Your List
ADVERTISEMENT

Next on Your Reading List

siblings mad at each other
How to Deal With Early Sibling Rivalry, According to Experts and Parents
Medically Reviewed by Dina DiMaggio Walters, MD
toddler standing in front of TV at home
How to Set Healthy Screen-Time Boundaries That Work for Your Family
Medically Reviewed by Lauren Crosby, MD
young girl packing backpack at home
Teach Your Kids to Be More Self-Sufficient with This Simple Change
By Wyndi Kappes
ADVERTISEMENT
Brittany Cartwright attends the 2025 iHeartRadio Music Awards at Dolby Theatre on March 17, 2025 in Hollywood, California
Bravo’s Brittany Cartwright Opens Up About Her Son’s Autism Diagnosis
By Wyndi Kappes
mother talking to frustrated toddler
Teach Your Toddler This Now to Avoid Entitlement Later, Says Dr. Becky
By Wyndi Kappes
clingy baby holding onto mom
What Is a Velcro Baby? And How to Cope With Clinginess
Medically Reviewed by Dina DiMaggio Walters, MD
toddler grabbing ice from freezer
Chill Out Toddler Meltdowns with This Ice Cube Hack
By Wyndi Kappes
ADVERTISEMENT
mom talking to toddler son
This Magic Parenting Phrase Keeps Toddlers from Touching Everything
By Wyndi Kappes
toddler in mom's arms
Dr. Becky and Other Experts on Parenting Deeply Feeling Kids
Medically Reviewed by Dina DiMaggio Walters, MD
mom holding her toddler's arm after he spilled hi breakfast
How The Viral "Google Search Mindset" Helps Toddlers Follow Directions
By Wyndi Kappes
ADVERTISEMENT
family laughing in the kitchen
What Are the 4 Main Parenting Styles?
Medically Reviewed by Dina DiMaggio Walters, MD
 Brittany Mahomes attends the 2024 Time100 Gala at Jazz at Lincoln Center on April 25, 2024 in New York City
Brittany Mahomes Fields Advice for Breaking Her Toddler’s Tech Habit
By Wyndi Kappes
toddler throwing pink block toys
Toddler Throwing Things? Here’s How to Deal
Medically Reviewed by Dina DiMaggio Walters, MD
ADVERTISEMENT
mother holding toddler smiling
Viral Video Shares Three Ways To Build Your Toddler's Self-Esteem
By Wyndi Kappes
mom playing with smiling baby
These Five Factors Help Ensure Baby Thrives, Researchers Say
By Wyndi Kappes
toddler girl choosing clothes from closet
This Viral Bedtime Routine Helps Prevent Morning Wardrobe Meltdowns
By Wyndi Kappes
mother and toddler daughter sitting on the couch reading a book together at home
How to Tell If Your Toddler Is Smart
Medically Reviewed by Lauren Crosby, MD
ADVERTISEMENT
father talking to toddler daughter while playing at home
Early Childhood Parenting Style Could Influence ADHD Severity in Kids
By Wyndi Kappes
toddler painting on bathroom door
Toddler Discipline: Why Toddlers Act Out—and What You Can Do About It
Medically Reviewed by Dina DiMaggio Walters, MD
toddler girl picking her nose
7 Weird Toddler Behaviors That Are Actually Normal
By Jenna McCarthy
ADVERTISEMENT
Article removed.