TYPES OF HEURISTICS: Fast & Frugal Heuristics vs. Other Methods
selected from Gigerenzer & Todd Simple Heuristics That Make Us Smart Oxford 1999

(compiled by Edward G. Rozycki, Ed.D. )

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edited 7/24/16

 STEPS HEURISTICS/ other methods* Preconditions Step 0 Step 1: Search Rule Step 2: Stopping Rule Step 3: Decision Rule Notes w/ pg #'s Recognition RH Chap 2 Pairwise random presentation of objects (PRPO) See if item of selected pair is recognized. If neither or both recognized, back to 0. If only one and not more than one item recognized, stop Select recognized object. Heuristic def's: ecological validity: discrimination rate: Conflicts avoided 81 Rules non-compensatory 81 Minimalist MH 79 (PRPO) Cue randomly selected. Use RH Random selection of cue; if none found, guess. If cue values are 1,0 go to 3; otherwise step 1 Object with 1 has higher value. Take the Last TLH 80 History of Cue used to solve previous problem: Einstellung**;) (PRPO) Cue randomly selected. Use RH. Einstellung** From second problem, start with last problem's successful cue. If not stopped, use cue antecedent to failed one from previous problem. Object with 1 has higher value. Keep history of successful cues. Take the Best TBH 80 Order by perceived validities (PRPO) Cue NOT randomly selected. Use RH. Ordered Search: Use cue of highest validity not yet tried for present task.. If choice fails, used next highest validity cue. Compare cue values Object with 1 has higher value. Franklin 76 (adapted) weightings not subjective as were Franklin's Weighted linear combination of cues (WLCC) CS Weightings may vary. When all cues and weights determined CMI by sum of products of weights by cues. Select highest product. "Commandments" of unbounded rational judgment: a. complete search (CS): find all information available b. compensation (CAI): combine all pieces of information 83 Dawes Linear strategy, unit weights CS Weights all = 1. Determine all cues. See Franklin Step3. Multiple Regression Attempt to minimize least squares in regression line thru all data points CS Expected Value of CMI Accept regression with least sum of squares. Expected Value CS, CMI All values with associated probabilities Choose highest of all E(V)'s.

**Einstellung: attitude, setting, stand

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