THIS IS A TEST FILE  ... it are full of Villa thangs ....


  Data are from the 'f8' and 'h1/h2/b' sets, '0000_m' files. These are
  summarized in 

  Second Session, First (Prompted) Condition: 
  G1 G2 G3


  Second Session, Second (Instructed) Condition: 
  G1 G2 G3


  Strategy and accuracy data from these files are themselves summarized in 
  components_model_sim_sum.

  ---

  Accuracy Chi-Squares

  Empirical Data
  Accuracy data are summarized here. Correct recall
  versus total times a strategy was used are collected by group and
  condition for the second session:

  G1C1 G2C1 G3C1

  G1C2 G2C2 G3C2

  Simulations
  Working on accuracies. Some problems with methods include mixing
  strategy use with accuracy - with the natural consequence that the
  bin counts differ. accuracy data

  chstwob, data not normalized
  chsone,  data normalized
  chstowb, data normalized


   Note that empirical 'Correct' values are derived by multiplying the
	simulated accuracy by the number observed correct. This means that
	'Predicted Observed' will be 0 if either the model predicts no use OR
	there were none observed correct in the empirical data.
 
  ---

  352/384-Sample Strategy Chi-Squares
  A similar set of data are produced for strategies:

  chstwob, data not normalized
  chsone,  data normalized
  chstowb, data normalized

  These three sets are based on 352/384 samples (11/12 children * 8
  trials * 4 instructions/trial). They are a subset of the original
  data generated by the simulations (1408/1536 samples).


   ---

  32-Sample (averaged) Strategy Chi-Squares
  Since these are problematic, a set using 32-sample sets is
  produced:


  chstwob, data not normalized
  chsone,  data normalized
  chstowb, data normalized data

   These are the original data (1408/1536 samples) divided by 44/48 (4
   ins * 11/12 children) to produce sums of 32.0 (as in total trials per
   child). It is this set of data (the chstwob data) that was used to
   generate the strategy use patterns as seen in the grant and
   publications.

  ---
  

  (1997-09-23/24 mfv)

   Chi-squares of 'Correct' Recall, 'Observed' (empirical) vs. 
   'Predicted Observed' (model)

   * Per Bray meeting, Values from file are divided by 12 so that maximum
     possible values (only one strategy used, all correctly recalled) at 88/96
     (11/12 subjects). This is similar to the strategy case (which sum to 32)
     but we have three categories here (O/R/T).
	  [*.averaged_accuracy_non_normalized] 

      

   G1C1 G2C1 G3C1
   G1C2 G2C2 G3C2


     Same, but using chsone() test with normalized data.
	  [*.averaged_accuracy_normalized]

    

   G1C1 G2C1 G3C1
   G1C2 G2C2 G3C2


* (1997-10-02 mfv)  Update 'echs3'output format to separate user and
   machine-readable portions and subset and experiment
   prefix/sufix in default output file name.