Adler                  package:car                  R Documentation

_E_x_p_e_r_i_m_e_n_t_e_r _E_x_p_e_c_t_a_t_i_o_n_s

_D_e_s_c_r_i_p_t_i_o_n:

     The 'Adler' data frame has 97 rows and 3 columns.  

     The ``experimenters'' were the actual subjects of the study.  They
     collected ratings of the apparent successfulness of people in
     pictures who were pre-selected for their average appearance. The
     experimenters were told prior to collecting  data that the
     pictures were either high or low in their  appearance of success,
     and were instructed to get good data,  scientific data, or were
     given no such instruction. Each  experimenter collected ratings
     from 18 randomly assigned respondents.

_U_s_a_g_e:

     data(Adler)

_F_o_r_m_a_t:

     This data frame contains the following columns:

     _i_n_s_t_r_u_c_t_i_o_n a factor with levels: 'GOOD', good data; 'NONE', no
          stress; 'SCIENTIFIC', scientific data.

     _e_x_p_e_c_t_a_t_i_o_n a factor with levels: 'HIGH', expect high ratings;
          'LOW', expect low ratings.

     _r_a_t_i_n_g The average rating obtained.  

_S_o_u_r_c_e:

     Adler, N. E. (1973) Impact of prior sets given experimenters and
     subjects on the experimenter expectancy effect. _Sociometry_ *36*,
     113-126.

_R_e_f_e_r_e_n_c_e_s:

     Erickson, B. H., and Nosanchuk, T. A. (1977) _Understanding Data._
     McGraw-Hill Ryerson.

