MigrationMigrationPopulation = BR – DR +/- MigrationPopulation = BR – DR +/- Migration

ClassificationClassification

Accidental unconscious drift?

Sleepwalking!

How can it be explained?How can it be explained?

Mathematical modelling v behavioural approach

It’s a TOK moment!!!

A knowledge issue in the subject area of social science.

Understanding Migration – Understanding Migration – Migration ModelsMigration Models

Gravity model. Gravity model. (based on Ravenstein’s laws of migration)(based on Ravenstein’s laws of migration)

Stouffer’s intervening opportunity model.Stouffer’s intervening opportunity model.

Stepwise migration model. Stepwise migration model.

Lee’s push-pull model.Lee’s push-pull model.

Zelinsky’s model of mobility transition.Zelinsky’s model of mobility transition.

Refs. Refs. Pop, Res, Dev pp. 59 to 62 Pop, Res, Dev pp. 59 to 62 Additional refsAdditional refs Pop, Res, Dev pp. 55 to 77Pop, Res, Dev pp. 55 to 77

Hart pp. 136 to 137Hart pp. 136 to 137

Landmark pp 181Landmark pp 181

Comparing approachesComparing approaches

Each group presents and explains Each group presents and explains how their model works.how their model works.

All students make notes on each All students make notes on each model and comment on what are the model and comment on what are the strengths and weaknesses of each strengths and weaknesses of each model in explaining migration in the model in explaining migration in the real world.real world.

Points to think aboutPoints to think about

Explanation of reality or merely a Explanation of reality or merely a simplification ignoring many factors?simplification ignoring many factors?

Merely descriptive?Merely descriptive?

Is the model showing what Is the model showing what shouldshould happen?happen?

Changing factors over time and space.Changing factors over time and space.

Real world usefulness. Purpose?Real world usefulness. Purpose?

Your own ideas and preferences.Your own ideas and preferences.