con_zs_holland: Congruence Index according to Zener & Schnuelle (1976)
In holland: Statistics for Holland's Theory of Vocational Choice

Description Usage Arguments Details Value References Examples

The function computes the congruence index according to Zener & Schnuelle (1976).

1	con_zs_holland(a, b)

`a`	a character vector with person Holland codes.
`b`	a character vector with environment Holland codes.

The function finds the congruence according to Zener & Schnuelle (1976) between the three-letter Holland-codes given in argument a, which is the person code, and argument b, which is the environment code. The Index as defined by Zener & Schnuelle (1976) targets (only) three letters from the Holland code. The degree of congruence is output, according to its definition by Zener & Schnuelle (1976), as a reciprocal value of a distance. This means, for example, that a value of '6' is the result for a perfect fit of two three-letter codes !

a numeric with value for congruence.

Holland, J.L. 1963. A theory of vocational choice. I. Vocational images and choice. Vocational Guidance Quarterly, 11(4), 232–239.

Zener, T. B. & Schnuelle, L. (1976). Effects of the self-directed search on high school students. Journal of Counseling Psychology, 23(4), 353–359.