Scroll through the following age groups and click on a developmental ability by age to see how it might affect parenting.
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Explore different milestones as they relate to potentially challenging behavior, divided up by age.
0-18 Months
Cry when in pain, tired, hungry, cold, thirsty, wet, lonely or in new situation

Crying babies are not misbehaving. They are trying to communicate. Picking up and comforting a crying baby will not spoil her.
Afraid of strangers, unfamiliar situations, and being separated from caregivers

Do a short and sweet good-bye. Try to find familiar people to care for the baby. Create consistent routines when possible.
Have trouble handling strong emotions

Need adult help (swaddling, rocking, holding, quiet talk) to calm down.
Enjoy audience and applause

To encourage behavior, provide attention, smile, and clap. Ignore undesired behaviors.
Can play alone for brief periods of time

Provide frequent checks and attention.
Become angry when frustrated

Remain calm, don’t take it personally. Try to distract or redirect their attention.
Learn by exploring the environment

Assume they will touch or put things in their mouth. Put small objects (choking hazards) and breakables out of reach.
Have very short attention spans

Have a variety of different items to play with (wooden spoons, plastic containers, lids. Show them different ways to play with the same object (e.g. stacking, tapping, rolling).
Can follow very simple instructions

Keep instructions short—one or two words (No touch! Be gentle. Hot!). Use actions to show what you want (e.g., say “Clean up time!” and start putting away toys).
Want to do more things for themselves

Be patient. When it’s safe, let them try to do things by themselves. Allow extra time. Expect messy meals and frustration. Applaud their efforts, even if not perfect.
18-36 Months
Want to do more and more things by themselves.

Encourage finger foods and self-feeding. Let them try to get dressed or undressed on their own. Start with easy tasks (e.g., taking off socks, pulling up elastic waist pants), get the task started, let them finish. Expect frustration if they can’t do things for themselves.
Are beginning to show independence; stubborn; say NO

Provide choices. Rather than asking “Do you want to get in the car?” say “We have to get in the car. Do you want to walk or should I carry you?”
Have difficulty sharing, taking turns

Make sure there are enough play objects to go around. Explain to older children that it is hard for the baby to share.
Have trouble waiting; vague notion of time; want things right now

Understand that this is not rude behavior. Provide concrete time markers—e.g., after your bath, when Daddy gets home, etc. Provide distraction during wait times.
Have trouble expressing emotions with words

Use dolls, books, and other people to teach about emotion words like happy, sad, angry, or tired. Try to help them find the words if they are upset. Praise when they do use their words.
When frustrated/angry— use tantrums or hit and kick to get what they want.

Ignore tantrums as much as possible. Do not give in. If they are in danger of hurting themselves or others, distract/redirect or physically hold them until they are able to calm down. Do not hit back or yell in response to tantrums.
Enjoy adults’ attention

Anticipate frequent attempts to get attention. To encourage good behavior, provide attention, praise, smile, clap. Ignore undesired behaviors.
Have short attention spans; easily distracted

Have several different items to play with (wooden spoons, plastic containers, lids, blocks, short books). Expect church, grocery store to be challenging, especially for tired, hungry toddlers.
Just beginning to remember rules--don’t really understand right from wrong.

Repeat rules frequently. Remind children about rules ahead of time.
Are very curious. Ask a lot of questions. Like to sort things, test how things work.

Expect the same question to be asked many times. Make sure house is safe; put dangerous things out of reach.
3-5 Years
Beginning to play cooperatively. Still hard to share but begin to understand turn taking

May need adult help to take turns. Be sure to have enough play objects to go around. Consider putting away special toys that may be hard to share with playmates.
Can tell when someone is angry or upset, but still have trouble taking someone else’s perspective.

Model empathy by saying how you feel when they do something (“When you grab that from Daddy, it makes Daddy feel sad.”)
Sometimes can resist temptation.

Use positive attention to reward these moments. Some children talk to themselves out loud for self-control.
Eager to help

Have them help out by cleaning up their toys, drying dishes, setting or clearing the table, or laying out their clothes for the next day. Praise helping.
Better ability to use imagination; can imagine terrible things can happen.

Fears and nightmares may disrupt sleep. Calmly reassure them that they are ok and you are there. Remind them that dreams are not real. Use a night light.
More able to communicate thoughts, feelings, but control is still a challenge.

Praise them for using their words. Acknowledge their feelings. Try to come up with strategies for dealing with those emotions, like deep breaths or counting. Some children control their emotions physically—close eyes, cover ears or walk away.
Ask a lot of why, how, when questions

Expect the same question to be asked many times. Provide answers if you can, or try to find the answer later.
Learn by imitation, exploring, doing. Love pretend play

Anything they see or hear may be imitated—even undesirable behaviors.
Beginning to understand basic time concepts: before/after, today, yesterday, tomorrow

It can be helpful to prepare them for a change, e.g., “Tomorrow, instead of going to school, you will be staying home with Grandma”.
Can’t play or do something for too long. Get bored without adult guidance

Longer attention span than when they were toddlers. Still may need a few minutes of adult attention to engage them in a new activity, like 5 minutes of coloring with mom and then they make their own picture. Check in frequently to praise their efforts.