Intertemporal versus interspatial comparison: Difference between revisions
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The following table examines '''intertemporal versus interspatial comparison''' in PPP calculation/[[index number theory]]. | The following table examines '''intertemporal versus interspatial comparison''' in PPP calculation/[[index number theory]]. In particular, aspects of intertemporal comparisons have counterparts in interspatial comparisons, so the table catalogs these. | ||
==Comparison table== | ==Comparison table== | ||
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{| class="sortable wikitable" | {| class="sortable wikitable" | ||
|- | |- | ||
! | ! Aspect !! Intertemporal !! Interspatial | ||
|- | |- | ||
| How well the weights match the thing being compared || Up-to-dateness || Characteristicity | | How well the weights match the thing being compared<ref name="drechsler">{{cite web |url=http://onlinelibrary.wiley.com/doi/10.1111/j.1475-4991.1973.tb00871.x/full |title=Weighting of index numbers in multilateral international comparisons |journal=Review of income and wealth |first=László |last=Drechsler |date=March 1973 |accessdate=November 12, 2017}}</ref>{{rp|19}} || Up-to-dateness || Characteristicity | ||
|- | |- | ||
| || || [[Gerschenkron effect]] | | Tendency of Paasche quantity indices to be lower than Laspeyres indices<ref name="icrgp1982">{{cite web |url=http://documents.worldbank.org/curated/en/974171468766774952/pdf/multi-page.pdf |title=World Product and Income: International Comparisons of Real Gross Product (United Nations International Comparison Project Phase III) |year=1982 |first1=Irving B. |last1=Kravis |first2=Alan |last2=Heston |first3=Robert |last3=Summers |publisher=Johns Hopkins University Press |accessdate=November 5, 2017}}</ref>{{rp|75}} || [[Gerschenkron effect]] || Own-weight effect | ||
|- | |- | ||
| Ordering || Natural ordering by year || No natural ordering (but some have devised orderings) | | Ordering || Natural ordering by year (or other granularity of time periods) || No natural ordering (but some have devised orderings, e.g. an approach where structurally similar countries are compared to each other)<ref name="drechsler" />{{rp|32}} | ||
|- | |||
| The thing against which other things are compared || Base year || [[wikipedia:Numéraire|Numéraire]] country | |||
|- | |||
| Symmetry in treatment of the base || Time-reversal test || Country reversal test (bilateral) or base-country invariance (multilateral)<ref name="icrgp1982" />{{rp|71–72}} | |||
|} | |} | ||
Latest revision as of 01:25, 13 November 2017
The following table examines intertemporal versus interspatial comparison in PPP calculation/index number theory. In particular, aspects of intertemporal comparisons have counterparts in interspatial comparisons, so the table catalogs these.
Comparison table
| Aspect | Intertemporal | Interspatial |
|---|---|---|
| How well the weights match the thing being compared[1]Template:Rp | Up-to-dateness | Characteristicity |
| Tendency of Paasche quantity indices to be lower than Laspeyres indices[2]Template:Rp | Gerschenkron effect | Own-weight effect |
| Ordering | Natural ordering by year (or other granularity of time periods) | No natural ordering (but some have devised orderings, e.g. an approach where structurally similar countries are compared to each other)[1]Template:Rp |
| The thing against which other things are compared | Base year | Numéraire country |
| Symmetry in treatment of the base | Time-reversal test | Country reversal test (bilateral) or base-country invariance (multilateral)[2]Template:Rp |
See also
External links
References
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