Temperament

We all act in our own way. This is called temperament. It is how we react to the world.

It is part of who we are from birth. It stays with us as we grow up.

Some babies are very easy. They sleep and eat at the same times. They are often in a good mood.

Other babies are more difficult. They may cry a lot. They might have hard times sleeping.

Some babies are slow to warm up. They may shy away from new things. They need time to feel safe.

Every way of being is okay.

Have you ever noticed how everyone acts differently? This is called temperament. It is your unique way of reacting to the world. Scientists say temperament is something you are born with. It does not change much as you grow up.

Researchers have studied how babies act. In a famous study, experts found three main groups. About 40% of babies are "easy." They have steady sleep and eating habits. They are often in a good mood. About 10% are "difficult." These babies may cry a lot. They might have irregular sleep patterns. About 15% are "slow-to-warm-up." These babies may shy away from new things. They need time to feel safe before they join in.

Other scientists look at specific traits. One trait is activity level. This is how much physical energy a child has. Some children are always moving. Others like to sit still. Another trait is regularity. This is how predictable a child's body is. For example, an easy baby might want to eat at the same time every day. These patterns help us understand how people fit in at school and home.

Have you ever wondered why some people are always calm while others are very energetic? This unique way of behaving is called temperament. It is the set of traits you are born with. These traits help decide how you react to the world around you. Unlike personality, temperament is based on biology. This means it is part of how your body works. It stays mostly the same even as you learn new things or grow up.

Scientists study temperament by looking at how people act in different situations. One way is to look at how long someone can stay focused or active. This is called endurance. Another way is to look at speed, or how fast someone changes their plans. This is called plasticity. Some people might seek out exciting things, which is called sensation seeking. Others might focus more on how other people feel. This is called empathy.

People have been thinking about temperament for a very long time. In the second century AD, a doctor named Galen spoke about four types. He believed these types came from different fluids in the body. Later, famous thinkers like Immanuel Kant and Carl Jung studied these ideas too. In the 1950s, researchers Alexander Thomas and Stella Chess began a famous study in New York. They wanted to see how a baby's temperament helps them fit in at school and home.

In the New York study, researchers found three main groups of babies. About 40% of babies were "easy" and had steady routines. About 10% were "difficult" and might cry more often. About 15% were "slow-to-warm-up" and needed time to feel safe. Another scientist, Jerome Kagan, studied how babies react to new things. He found that "highly reactive" babies often felt more fear as they grew older. These babies were sometimes called "inhibited" because they were more cautious.

Temperament is like a personal guidebook for how you move through life. It includes things like your activity level, which is your physical energy. It also includes regularity, which is how predictable your eating and sleeping are. Some children are bold and approach new people quickly. Other children are cautious and prefer to watch from a distance first. Understanding these patterns helps us see why everyone is so wonderfully different.

In psychology, temperament refers to the consistent differences in how individuals behave. These traits are biologically based, meaning they are part of our physical nature. They are mostly independent of what we learn or our personal values. While temperament traits, such as sociability or impulsivity, appear throughout a lifetime, they are most noticeable in children. Researchers view temperament as a unique behavioral style. It determines how a person experiences and reacts to the world around them.

Scientists use many models to understand these biological patterns. One major approach is the Rusalov-Trofimova neurophysiological model. This model grew from the work of Ivan Pavlov’s school of research. It uses methods like EEG and behavioral tasks to study the nervous system. This model organizes temperament into several specific scales. Some scales measure endurance, which is the ability to sustain activity. These can be motor-physical, social-verbal, or mental endurance, also known as attention.

Other scales in this model look at how quickly behavior integrates. This includes motor-physical tempo, which is the speed of physical actions. It also includes plasticity, which is the ability to adapt to new situations. Another scale is social-verbal tempo, or the preferred speed of speech. The model also tracks how people orient themselves toward the world. This includes sensation seeking, which is looking for exciting events. It also includes empathy, which is an orientation toward the emotions of others.

Historical views on temperament have changed significantly over time. In the second century AD, the physician Galen proposed four classical temperaments. These were melancholic, phlegmatic, sanguine, and choleric. Galen believed these matched the four humors, or bodily fluids. Many famous thinkers later explored these ideas, including Immanuel Kant and Carl Jung. Rudolf Steiner also used these four temperaments in elementary education. However, modern medicine and psychology do not use Galen’s historical model today.

In the 1950s, researchers Alexander Thomas and Stella Chess began the New York Longitudinal study. They wanted to see how temperament affects a person's adjustment to life. They identified nine specific characteristics in children. These include activity level, regularity, and initial reaction. They also looked at adaptability, intensity of emotion, and mood. Other traits were distractibility, persistence, and sensory sensitivity. These traits exist on a continuum, meaning they can range from high to low.

Thomas and Chess found that many babies fit into three main groups. Approximately 40% of children were categorized as "easy." These children adapt well and have positive moods. About 10% were categorized as "difficult." These babies are often irritable and have irregular routines. About 15% were "slow-to-warm-up" children. These children have low activity levels and withdraw from new situations. These three groups account for about 65% of all children.

Another researcher, Jerome Kagan, focused on a category called "reactivity." He studied how four-month-old infants reacted to new things. Highly reactive infants became distressed or physically aroused by new stimuli. Low reactive infants remained relaxed and did not cry. Kagan found that highly reactive infants often grew into "inhibited" children. These children showed high fear toward unfamiliar events. Conversely, low reactive infants often showed an "uninhibited" profile.

Temperament is closely linked to how we function in society. For example, a child's activity level can affect their schoolwork. A high-energy child might struggle to sit still in a classroom. A child with low energy might prefer fine motor tasks like drawing. Regularity, or rhythmicity, affects how predictable a child's biological functions are. This includes how they eat and sleep. By studying these patterns, scientists can understand how biology shapes our daily lives.