Social Mobility (Intergenerational, Intragenerational, Vertical, Horizontal)

Social mobility describes movement between positions in a social hierarchy — and the MCAT tests whether you can precisely classify that movement by type, direction, and cause. The four core distinctions you need cold are: intergenerational vs. intragenerational, vertical vs. horizontal, and structural vs. exchange mobility. These aren't just vocabulary — passages will describe a scenario (a person's career arc, a family across two generations, a societal shift in job distribution) and ask you to identify what kind of mobility occurred. Misclassifying costs points.

The trickiest part is that students routinely swap intergenerational and intragenerational. The prefix 'intra' means within — within one lifetime, one person. 'Inter' means between — between generations, typically parent and child. A second common error: students treat horizontal mobility as 'slow upward mobility,' but it isn't upward at all. A nurse who becomes a teacher hasn't moved up or down — she's moved laterally within a similar prestige bracket. No rank change. That's horizontal.

The MCAT also tests structural vs. exchange mobility, which is a conceptual gap for most students. Structural mobility happens when the economy itself shifts — more professional jobs get created, so more people can move up even without anyone moving down. Exchange mobility is zero-sum: one person rises, another falls, within a fixed structure. Passages about industrialization, automation, or economic booms usually cue structural mobility. Passages describing individual career changes or class comparisons within a stable economy usually cue exchange mobility.