One strength of Kohlberg's stage theory is that evidence suggests that gender stereotyping does begin around the age of 6 as he predicted:
Damon told children a story about a boy who played with dolls
Four-year-olds said that it was okay
Six-year-olds said that it was wrong
Therefore, this suggests that children who have achieved gender constancy have formed rigid stereotypes regarding gender-appropriate behaviour
Counterpoint to research support
Bussey and Bandura found that children as young as four'felt good' about playing with gender-appropriate toys and felt 'bad' about playing with the opposite
This contradicts Kohlberg's predictions but may support gender schema theory
Methodological issues
One limitation of Kohlberg's theory is that supporting research relies on unsatisfactory methods:
Methodological issues arise from interviewing children to investigate cognitive theories
Children do not have fully formed opinions or the vocabulary required to express them
They may also unknowingly conform to interviewer bias as they are more impressionable than adults
Research support
One strength of Kohlberg's theory is that there is evidence that supports gender-seeking behaviour:
Slaby and Frey showed children a screen with a male and female performing a task
Young children spent equal time watching both genders
Older children spent more time watching the model of the same sex
Therefore, this research supports Kohlberg's theory of seeking gender-appropriate role models to identify with