Heterogeneity and small sample size are problems that affect many paleodemographic studies. The former can cause the overall distribution of age at death to be an amalgam that does not accurately reflect the distributions of any of the groups composing the heterogeneous population. The latter can make it difficult to separate significant from nonsignificant demographic differences between groups. Survival analysis, a methodology that involves the survival distribution function and various regression models, can be applied to distributions of age at death in order to reveal statistically significant demographic differences and to control for heterogeneity. Survival analysis was used on demographic data from a heterogeneous sample of skeletons of low status Maya who lived in and around Copan, Honduras, between A.D. 400 and 1200. Results contribute to understanding the collapse of Classic Maya civilization.
This paper examines the problems encountered by users of ceramic frequency seriation in distinguishing chronologically meaningful trends from the background stochastic “noise” inherent in all ceramic assemblages. Aspects of manufacture, breakage and discard behavior are found to be important in the creation of “noise” in the archaeological record. A computerized model (POTS), which simulates both chronological changes and background “noise” in the ceramic assemblages of hypothetical villages, is used to evaluate the effects of sample size on the chronological accuracy of seriated sherd deposits. It is concluded that in order to maximize the utility of frequency seriation as a chronological ordering device, users should be concerned with the statistical adequacy of their sherd samples and that additional experimentation is needed with artificial data sets generated under ethnographically controlled conditions.
A major problem has been to bridge the gap between the peoples who are identified by Spanish and Indian documentary records and those who are known to us only through the ruins of their buildings and the broken elements of their material culture which have survived.-Vaillant 1937:324 The would-be correlator faces the problem of a genuine "gap" between the emphasis in the native traditions on political and dynastic history and the sequent modifications in artifact form which are the chief concern of the excavator. .. The problem is to bridge this gap, to tie the two kinds of history together at key points, to integrate the two sets of data in a meaningful synthesis.-Nicholson 1955:596 Los avances que se han hecho y los que están por hacerse, descansan en la confluencia conciente y coordinadora de dos disciplinas. .. esta recreación del acercamiento antropológico unificado, que llena la brecha entre disciplinas, es la ola del futuro. En la medida en que nuestras tareas estén coordinadas, en esa medida podremos aprender.-Byland and Pohl 1990:385-386 sCoPe and definitions
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