10 Seeding Effect

Question 1

Which types of knowledle did Brown & Siegler differentiate in their framework on estimation of real-world quantities?

Answer 1

metric knowledge
mapping knowledge

Question 2

How is metric knowledle defined?

Answer 2

knowledge of the statistical properties of a criterion, e.g. form of distribution, central tendency, variability

Question 3

How is mapping knowledge usually measured?

Answer 3

via the Spearman rank-order correlation

Question 3

How is metric knowledge usually measured?

Answer 3

Order of magnitude error (OME)
OME = |log10(estimate / true value)|

Question 3

How is mapping knowledge defined?

Answer 3

knowledge of the relative positions of objects along the criterion

Question 4

What is the seeding paradigm?

Answer 4

1. Estimation Phase (T0): people make estimations for certain objects, e.g. how many calories
2. Seeding Phase: People see actual number for some of the objects
3. Estimation phase T1: people make estimations for the same objects as T0

Question 5

What are two different types of items one usually has in a seeding experiment?

Answer 5

Seeding Items (answers were given during seeding phase)
Transfer items (not included in seeding phase)

Question 6

What are examples for factors that can lead to a larger seeding effect on metric knowledge?

Answer 6

more seeding items
use items that people have little knowledge about

Question 7

What are the two cognitive processes people are assumed to use when making quantitative judgements?

Answer 7

Rule-based processes (people combine cue information according to some abstract rule)
exemplar-based processes (people store previously encountered objects & their criterion value in memory & new objects are then judged based on similarity to these exemplars stored in memory)