AP Psychology Practice Test 2025 - Free AP Psychology Practice Questions and Study Guide

The correct answer is that attachment is shown in young children by demonstrating distress upon separation. This behavior is a key indicator of the emotional bond a child has formed with their primary caregiver. Research has shown that children who are securely attached exhibit noticeable signs of distress when they are separated from their caregiver. This attachment is crucial for their development, as it helps them feel safe and secure, enabling them to explore their environment and develop social skills.

When a child experiences distress upon separation, it reflects their reliance on and connection to their caregiver for comfort and security. This reaction can manifest as crying, tantrums, or seeking proximity to the caregiver upon their return. Overall, attachment is fundamentally about the emotional resonance between a child and their caregiver, and distress upon separation is a clear behavioral manifestation of that emotional bond.

In contrast, the other options focus on different aspects of development and behavior. While language development, sensory impressions, and logical thinking are all important for a child's overall growth, they do not specifically address the emotional connection that is indicative of attachment.