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Cultural Research. Západočeská Univerzita (ZČU) James Boster. Sources of Anthropological Data. Západočeská Univerzita (ZČU) James Boster. Artifacts. Documents. Behavioral Observation. Participant Observa tion. Interviews. Systematic Data Collection. Západočeská Univerzita (ZČU)
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Cultural Research Západočeská Univerzita (ZČU) James Boster
Sources of Anthropological Data Západočeská Univerzita (ZČU) James Boster
Systematic Data Collection Západočeská Univerzita (ZČU) James Boster
Goal • Data for the quantitative comparison & aggregation of individual responses. • Information to build a data matrix.
Basic Concepts and Definitions Západočeská Univerzita (ZČU) James Boster
Guiding Metaphor • Data sets are spaces with a Cartesian coordinate system. • Variables are the space’s dimensions. • Cases are points in the space or the endpoints of vectors from the origin. • Data place all points on all dimensions.
Array • An ordered arrangement of data elements. • a vector is a one-dimensional array • a matrix is a two-dimensional array
Vector • A magnitude and a direction in multidimensional space. • A one-dimensional array.
Matrix • A set of vectors which define a multidimensional space. • A two-dimensional array with more than one row and column.
Matrix • columns = dimensions = variables • rows = vectors = points = cases
Indices/Subscripts • Numbers which specify the row and column of a cell in a matrix.
Conventions • Matrices have m rows and n columns. • The variable i indexes the rows, and the variable j indexes the columns. • If the matrix is stored in M, each cell is indexed as M[i,j]; with row subscript first and column subscript second.
Conventions • Matrices are typically accessed the way we read a page in a book. • first, left to right across each line. • next, top to bottom down the page.
Types of Matrices • Square vs. rectangular • equal or unequal number of rows and columns. • Symmetrical vs. asymmetrical • either equal or unequal to its transpose. • Similarity vs. distance • high values are either close or far.
Structured elicitation • Similarity judgment • Freelists • Identification • Frame substitution tasks • Ranking and rating
Domains • Facial expression of emotion • Color classification • Acts of destruction • Emotionally evocative situations • Locomotion
Why elicit similarity judgments? • The judgment of similarity and difference is a fundamental cognitive process that other cognitive acts of cultural interest depend on: • same/different judgments • categorization and classification • propositional knowledge • decision making • theory (or cultural model) construction
Why elicit similarity judgments? • Can give quick overview of a domain • A’ara personality descriptors (White) • as map
Why elicit similarity judgments? • Can give quick overview of a domain • A’ara personality descriptors (White) • as map • as cluster diagram
Why elicit similarity judgments? • Can give quick overview of a domain • A’ara personality descriptors (White) • as map • as cluster diagram • students' gender role terms (Holland and Skinner) • males
Why elicit similarity judgments? • Can give quick overview of a domain • A’ara personality descriptors (White) • as map • as cluster diagram • students' gender role terms (Holland and Skinner) • male map • female map
Why elicit similarity judgments? • Can reveal differences between groups • Atlantic fish (Boster & Johnson) • novice student map
Why elicit similarity judgments? • Can reveal differences between groups • Atlantic fish (Boster & Johnson) • novice student map • expert recreational fisherman map
Why elicit similarity judgments? • Can reveal similarities between groups • personality descriptors • A’ara • Oriya • US.