Based on the description, which infant temperament type best describes Justin?

The classification of Justin's temperament as "slow to warm up" is indicative of infants who tend to be more cautious when exposed to new situations, people, or environments. Typically, these infants may show initial resistance or apprehension but gradually adapt over time as they become more accustomed to their surroundings. This temperament type is characterized by a mild temperament, moderate activity levels, and a slower adjustment to new experiences, which can include a gradual increase in comfort and engagement with unfamiliar stimuli as time progresses.

In contrast, other temperament types portray different characteristics. An "easy" temperament is associated with infants who are generally cheerful, adaptable, and have regular sleeping and eating patterns. "Difficult" infants often display irregular habits, intense emotional reactions, and a tendency to withdraw from new experiences. Meanwhile, "unsettled" is not typically recognized as a standard classification in temperament theory, making it less applicable to typical assessments of infant temperament.

Overall, identifying an infant’s temperament is crucial for understanding their behavior and guiding caregivers on how to provide appropriate support. Justin, fitting the "slow to warm up" category, demonstrates key traits that highlight the gradual adaptation process typical of this temperament type.