Ages 0-6: Infants, Toddlers And Preschoolers
Young children see the world through their eyes and are not good at taking other's perspectives. This is natural during this time of development. Children commonly act on what they want to do in the moment. For many children, thinking about consequences or the impact of their behavior on others is a skill that has not yet been practiced or developed. They want to do what they want, and they are focused on seeking pleasure. For example, if they're uncomfortable in their clothes, they may take them off without considering being nude in front of others. Preschool children often do not yet understand social norms regarding wearing clothing in front of others.
Since young children often don’t yet have the knowledge or context for what is safe and not safe to do with their body, it’s important to talk with your children about their body and how it changes as they age. Teaching safety rules around their body will support prevention of their own problematic behavior, and reduce risk of your child being hurt by someone else. Resources from organizations such as the How To Talk To Preschoolers About Anatomy & Body Safety, Sex Education Forum, and Kids 4 Kids provide steps on how to engage in these conversations.
Sexual Knowledge
Knowledge and expression about gender, sex roles, and sexual behavior evolves throughout children’s early years. Most children are assigned as male or female at birth based on physical characteristics. Children as young as 3 years of age can identify their own assigned gender (girl or boy). At first, children judge the differences between genders based on observable features found in the culture (such as hair length, cloth choices), although by age 3 or 4 years, many children are aware of differences in the bodies of most boys and most girls. Young children often have a limited understanding of pregnancy and birth. By age 6, however, they may know that babies grow in a womb and they may know the differences between birth by Cesarean section or by vaginal delivery, depending on what has been taught. What children know about adults’ sexual behavior and intimacy is influenced by what the children have seen and heard.
Preschool children mostly know about such things as kissing and cuddling. About one in five 6-year-olds knows something about more explicit sexual behaviors.
Children need support, love and care from family, friends, school and community to foster gender development and growth into happy and healthy adults.
The table below provides examples of preschool-aged children's general development and how they learn. The second column explains how this relates to their sexual development and behavior.
Preschool Children’s Development And Behavior
Typical Cognitive, Language, and Social Development in Preschool Children | Typical Sexual Development and Behavior |
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Young children seek pleasure. They do not see themselves from other people’s viewpoints. They are not self-conscious. | They often prioritize comfort. They will undress and run around nude in front of others. They may appear to not care about how other people feel because they don’t fully understand the impact of their behavior on others. |
They are curious about the world, about how things work, and about how things are similar and different from each other. | They are curious about physical differences of different bodies and how bodies change as people age. This curiosity includes wanting to see how other children’s body parts are different. |
They learn through their senses, especially by using sight and touch. | They learn through their senses, especially by using sight and touch, and thus may try to look at or touch other people’s private parts. |
They have a rapidly growing vocabulary. | They may use words related to urination (“pee-pee”) and defecation (“poo-poo”) when labeling their private parts. These words can be exciting to children who will use the words repeatedly, particularly with other kids. Young children will use the technical labels (such as vagina, vulva, penis, anus), if taught these terms. |
They learn about behaviors by watching the people around them and imitating them. | They imitate behaviors of other children and adults, and play “doctor,” “house”, or “parents” with other children. |
Children want to avoid being punished by their parents. They try to avoid discomfort, including getting in trouble. They want approval, praise, and rewards from their parents. | Whether or how often a child repeats sexual behavior is often related to how caregivers respond to the child’s initial sexual behavior. Calm, educational responses help children learn. |
Preschool children have limited ability to plan and control their behavior. They have a poor understanding of the long-term consequences of their behavior. | Children’s typical sexual behavior (such as curiously looking at another child) is unplanned. The behavior is impulsive, without much forethought. |
Children often play make-believe. They often pretend to be something or someone else. | They may play or dress up as various people (real and make believe, of different professions, roles, and genders) and of animals. |
Sexual Behavior
Preschool-aged children are curious in general and tend to actively learn about the world through listening, looking, touching, and imitating. Preschool-aged children express their general curiosity about the world with questions. They also imitate behavior they have seen and they explore their own bodies and others’. Children ages 2 to 5 years old tend to look at others’ bodies and may be especially curious if those people are nude. Children that age do not tend to respect physical boundaries and may stand too close to other people. They often touch their own sexual body parts, even in public. Young children may also touch adult women’s breasts, particularly their mothers’. Dressing up and pretending to be others is not unusual throughout this developmental period. Some parents and caregivers may be concerned or confused if their child displays behavior that is not culturally typical for their sex assigned at birth (like a male child dressing up in girls’ clothing). We encourage families to remember that childhood is a period of learning and growth. In addition, providing affirmative and non-judgmental support of a child’s exploratory behaviors will allow for the best outcomes for your child, where they feel accepted and loved by their family regardless of their gender identity or expression.
Explore the American Academy of Pediatrics website for more about young children’s gender identity and expression. As well as, differences in sexual development.
Sexual play (showing one’s own sexual body parts and looking at or briefly touching other children’s body parts) is not unusual for preschool-age children. Sexual play is discussed in more detail below in the school-age development section. Culture and social context influence how often these typical behaviors occur.
Children as young as 7 months may touch and play with their own private parts. Infants and young children’s self-touch behavior appears largely related to curiosity and soothing feelings. From infancy on, children begin to explore the world. They learn about things that feel good and things that don’t. Various parts of the human body have a high concentration of nerve endings that make those areas very sensitive to touch. For example, the fingertips, mouth, anus, and genital areas are highly sensitive. Children discover the sensations in these areas during their normal exploratory behavior. Think of self-touch of private parts as a similar activity to when your child sucks her thumb or snuggles with a soft blanket. Even as infants, children are capable of sexual arousal; newborn baby boys can have penile erections. It’s an automatic bodily response, just like cutting a fresh onion can make your eyes water (even though you are not sad). These behaviors are very different from adult sexuality and self-stimulatory behavior. With young children, bodily responses are not a response to sexual fantasy - they are just something that feels soothing or good.
In contrast, sexually explicit, planned, or aggressive sexual acts are not a typical part of sexual development. Other rare sexual behaviors include putting objects in the vagina or rectum, putting one’s mouth on sexual parts, or pretending toys are having sex. See information about problematic sexual behavior here
In the first example of families provided in real world example section of this website, the two sons of the Cornelison family were demonstrating sex play. The children’s behavior was between two brothers of about the same age. They were not upset or angry. Instead, they were just curious. The behavior was not planned and happened when they were changing clothes. Neither child was pressured to do the behavior, although both were somewhat embarrassed to have been discovered. On the other hand, the sexual behavior of Ryan McFarland in the second example is of more concern due to the four-year age difference between him and his neighbor. The sexual behavior of Jerry Kastner in the last example is particularly concerning as he and his classmates used force with a younger student.