16, 17 and 18 Year Olds
Understanding Your Child’s Development
Your child is turning into a young adult. This is an exciting time for them. Their emotions can change quickly as they learn to deal with school, friends and adult expectations. It’s important to try to be an askable parent who’ll be there when your teen needs you. At this age they still have many questions that they may not ask.
The following is a list of changes your child may have already gone through or will go through during their teen years.
- The physical and hormone changes from going through puberty continue:
- continue to grow and gain weight
- skin is oiler and they may have acne on their face, upper back and/or chest
- have body odour, and may want to start using an antiperspirant or deodorant
- start to sweat more
- Seem to always be hungry and may eat a lot.
- They need more sleep, so it’s okay to let them sleep in on weekends.
- Usually reach their adult height by age 16 or 17.
- Breasts may continue to grow for some, for others, they may be fully developed.
- Still gaining weight, their hips begin to widen and fat in the buttocks, legs and stomach increases.
- Hips begin or continue to widen.
- Menstrual periods and ovulation become regular—it’s possible to become pregnant.
- White, mucous-like discharge from the vagina.
Fast growth in height and weight may continue for some, but slowing for others.
- Fast growth in height and weight may continue for some, but slowing for others.
- Shoulders grow wider.
- Pubic and underarm hair continues to grow and thicken.
- Body and facial hair still growing.
- Penis, scrotum and testes are close to, or are fully developed.
- Can have erections and ejaculate, sometimes while sleeping.
- Voice continues to deepen.
- May have swelling under the nipples (usually goes away by the end of puberty).
- A new desire for sexual experiences brought on by hormone changes.
- Continued interest in romantic relationships.
- More interest in sexuality—sexual fantasies are a way to prepare for and understand their sexual roles.
- May be attracted to or have a sexual experience with someone of the same sex. This does not mean that’s their sexual orientation.
- As they get older, dating relationships have a deeper involvement, with real concern for their partner.
- Increased physical desire for sexual play and intimacy.
- May masturbate.
- May feel confused, have strong emotions and feel anxious about their changing body.
- May become easily upset, be more sensitive or lose their temper more than usual.
- Conforming to their peer group becomes less important.
- Feels stress from more challenging school work.
- Relationships with peers and adults are becoming more stable. Conflicts are likely around issues of independence and self-identity.
- Have a more realistic and established view of themselves and others.
Learning & Thinking (Cognitive)
- Strong need and desire to assert independence— may rebel against parents.
- May appear unhappy with expectations from parents, but are privately reassured that their parents care enough to put expectations on them.
- Tend to experiment to try out different roles and search for self.
- Start to define personal values, using family, peer and societal values as a guide.
- Have an improved ability to think abstractly, to consider possible solutions to a problem and to predict cause-and-effect relationships.
- Future plans become important and start to be put in place.
- Have a need for a supportive environment and for parents to be understanding.
- Are better able to provide reasoning for the choices they make.
- Have a deeper ability for caring and sharing and for developing more intimate relationships.
- Spend less time with parents and more time with friends.
- Still enjoy being part of teams and groups but is more comfortable being their own person.
Click the link to learn more about children with Differing Abilities.
What Your Child Needs Your Help to Learn
As children make their way through the teen years, they will keep looking to their friends for answers and information. Being approachable is important so your teen knows they can come to you when they need you. At this age, teens still have many questions that they won’t ask about.
Teens in this stage of development should know all the information from birth to 15 years old, plus know:
- that it’s okay not to be sexually active
- how to use birth control correctly, as well as how each method works
- Information about emergency contraception
- about pregnancy
- about STIs and safer sex practices
- about the connection between alcohol, drugs and teen decision-making, including being sexually active
- the difference between healthy and unhealthy relationships
- about consent including negotiation and refusal skills, and relationship skills (e.g. how to end a relationship)
For more information, visit our Resources page.
To learn more, see Tips for Talking about Sexual Health.
In Alberta, the health curriculum includes sexual health outcomes beginning in grade four. To learn more, see curriculum overview on our Teacher Portal.