Within the study of lifespan development warrants further investigation from a cross-cultural perspective, and why? Recommend the best research method(s) for studying your identified topic. To what extent would the data, collected about this topic, generalise across cultures?

What topic, within the study of lifespan development warrants further investigation from a cross-cultural perspective, and why? Recommend the best research method(s) for studying your identified topic. To what extent would the data, collected about this topic, generalise across cultures?