Doing research = engaging in these debates. Different methodological approaches stem from different philosophical positions. Philosophy is to research as, grammar is to language. Determine laws to explain/predict human behavior via observable data & value-free research. Youth geography example: establishing laws of youth mobility patterns by testing relationship between income and transport type. Reconstruct individual worlds through describing human action, meaning and values. Methods: in depth interviews, ethnography, participant observation. Research approaches critical (marxist) mobility: describing youth meanings of and experiences with. Explain society through focus on political-economic structures. Youth geography example: explain youth marginalization within capitalist labor market that limits their socio-economic and thus physical mobility. Explain society through focus on gender relations of power. Youth geography example: explore men and women"s mobility, explaining differences (inequalities) via gendered system. Explain society by deconstructing multiple messages & recognizing difference. Youth geography example: explore social constructions of youth that serve to limit their physical and social mobility (e. g. youth as.