Time-Geography

Definition

Time-geography is an approach to studying human activity in space and time, developed by Swedish geographer Torsten Hägerstrand (1916–2004). It traces individuals' space-time paths through daily environments, identifying three types of constraints on movement: capability constraints (biological/ physical limits), coupling constraints (the need to coordinate with others, tools, or schedules), and authority constraints (access restrictions imposed by rules and power). Maycroft (2007) references time-geography in relation to the everyday life of rail commuters, suggesting that "plotting the 'time-geography' of individuals in a space such as Nottingham's railway station would reveal [the] complexity in relation to social space."

Key Thinkers

• Torsten Hägerstrand — originator of time-geography; space-time paths, prisms, and constraints.
• Georges Perec — the concept's literary anticipation (1974/2006): the nycthemeral timetable of "The Apartment" is a domestic space-time path plotted quarter-hour by quarter-hour, routing three occupants through the same rooms under coupling constraints (the shared breakfast, the family supper) and authority constraints (office hours, school hours) — see nycthemeral.

Related Concepts

• Everyday Life
• Empirical Methods
• Space
• Work/Leisure Distinction

Source Support

Sources in the wiki that discuss this concept:

• Everyday life in the real world (Maycroft 2007)
• The Partition of Space (Ardener 2006) — the anthropological parallel to Hägerstrand's constraints: "The environment imposes certain restraints on our mobility, and, in turn, our perceptions of space are shaped by our own capacity to move about" (p. 16); time and space as "mutually affecting spheres of reality" — distance as "five minutes' walk away," "the world getting smaller" through air travel, the Israeli settler whose change of place "collapsed, or elided" time (p. 20); Harvey's "nearness does not consist of shortness of distance"; Edwin Ardener's study of 'remoteness' and "Time-systems occupy spaces which are generated by and with the physical and social space" (p. 20).
• A pirouette on the orthographic hinge (Weinthal 2018) — the proto-time-geographic document: Callaghan & Palmer's 1944 "space-shapes" — three-dimensional models of bodies performing domestic chores (washing hair, getting dressed, putting on stockings), built from multiple simultaneous 35mm views aligned on a core vertical axis, with the body's movement interpolated "to fill in the diagonals" — are a domestic, task-scale space-time path made physical roughly two decades before Hägerstrand formalized the prism: the individual's trajectory through a room rendered as a solid, "the space used by the human body in action… recorded, measured, and reproduced in tangible three-dimensional form useful as the basis of house design." Where time-geography plots paths on maps, the space-shape casts them in clay, cardboard, wire, papier mâché, and straws — and its recurring difficulty ("how to coalesce the views and represent the body in motion as a static model when the movement of the body is inherently fluid") is the time-geographic diagram's own problem of congealing flow into form. See space-shape, orthographic-projection.
• The Apartment (Perec 1974/2006) — the concept's literary anticipation, the domestic timetable as space-time path: "The activities of the day correspond to slices of time, and to each slice of time there corresponds one room of the apartment. The following model is hardly a caricature" — the 07.00–22.00 table routing the mother, father and child through kitchen, bathroom, entrance-hall, dining-room, child's room and sitting-room, quarter-hour by quarter-hour. Hägerstrand's constraint-typology is legible in it: coupling constraints (the shared breakfast at 07.45, the family supper at 19.00, the school-run at 16.15), authority constraints (the father's office, the child's school, the "day boarder" lunch arrangement), capability constraints (the child's bedtime at 20.15). Perec adds the geography's designed edge: the path is the plan's own product — "it is nevertheless like that, and not otherwise, that architects and town planners see us as living or want us to live" — the space-time path as prescription, not just description. See nycthemeral, everyday-life.
• Towers in the Park, Bungalows in the Garden (Keil 2015) — the regional space-time paths of the post-suburban household, and the obsolescence of the model path: "A person can live in a compact, dense, walkable neighbourhood but work a long drive or transit ride away from it. In an age when families are not traditional (if they have ever been!), choice of residence is no longer a question of linear live-work relationships. There is no productive centre where the husbands go by day, and bedroom suburb where the housewives and the station wagons stay behind. If there are double income earners in one family, they likely work at different locations in the urban region. The location of their home will have to be a compromise" (p. 585) — the household's home location as the compromise of multiple divergent space-time paths, not the linear route of the classic timetable; "complicated by children going to school across the region to seek opportunity in education," with higher-education institutions "now in metropolitan peripheries" (Addie et al., cited p. 585). Where Perec's path is prescribed by the plan and Maycroft's is the commuter's, Keil's paths are plural, divergent and regionally distributed — the capability/coupling constraints of the sprawling region as the real terrain any densification policy must engage. See separate-spheres, everyday-suburbanism.
• source-notes/hedges-2018-the-waiting-room

Open Questions

• How can time-geography be applied to architectural analysis — mapping how buildings and public spaces constrain or enable daily space-time paths?
• Perec's timetable shows the space-time path running the other way: the plan prescribes the paths it claims to describe ("architects and town planners see us as living or want us to live"). Is time-geography a descriptive science of given mobility or — in domestic space at least — the analysis of a prescribed mobility, and should Hägerstrand's constraints be re-read as design instruments (the coupling constraint as program)?
• What is the relationship between time-geography and de Certeau's "Walking in the City" — do both map practice, or does time-geography lack the tactical/political dimension?
• Ardener's gendered mobility restraints (perceptions of space shaped by "our own capacity to move about") give the constraints framework a political content Hägerstrand's types leave implicit — can capability, coupling and authority constraints be re-read as gendered (see gendered-space)?