Final answer:
Research indicates that by age 10, racial attitudes can be quite strong, with early recognition of race and ethnicity happening even before the age of two. These attitudes may continue to evolve throughout a person's life.
Step-by-step explanation:
The age by which racial attitudes have crystallized is the subject of significant study and debate. However, based on research, it is suggested that explicit attitudes, or those we are conscious of, can develop early in life while implicit attitudes, which are unconscious, can continue to develop or change over a longer period.
According to some research, such as the work by Amsterdam (1972) and Archer (1992), children begin to recognize themselves and others as belonging to groups based on race or ethnicity before the age of two, and by age 10, they may already hold strong racial attitudes, with the potential to evolve or become entrenched as they grow older. It's important to remember that while foundational attitudes may form early, people continue to learn and adapt their views throughout life.