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bdkbZ 5 % ek¡x dk izdfVr (mn~?kkfVr) vfèkeku fl¼kar
5-1 pquko vfèkeku dks izdV djrk gS (Choice Reveals Preference) uksV
izks- lSE;wYlu dk ek¡x fl¼kar izdfVr vfèkeku midYiuk ij vkèkkfjr gS tks ;g crkrk gS fd pquko vfèkeku
dks izdV djrk gSA
bl fopkj dks n`f"Vxkspj j[krs gq, ,d miHkksDrk nks oLrqvksa osQ ,d la;ksx dks blfy, [kjhnsxk fd ;k og
bldks fdlh vU; la;ksx dh vis{kk vfèkd ilan djrk gS ;k ;g nwljs dh vis{kk lLrk gSA eku yhft, fd
miHkksDrk B, C ;k D la;ksxksa dh vis{kk A la;ksx dks [kjhnrk gSA bldk vfHkizk; ;g gS fd og A osQ izfr
vius vfèkeku dks izdV djrk gSA ,slk laHkor% og nks dkj.kksa ls dj ldrk gSA izFke] fd A la;ksx B,
C, D vU; la;ksxksa dh rqyuk esa lLrk gks_ f}rh; fd la;ksx A vU; la;ksxksa dh rqyuk esa eg¡xk gksus ij Hkh
miHkksDrk mldks nwljksa dh vis{kk vfèkd ilan djrk gksA bl fLFkfr esa ;g dgk tk ldrk gS fd B, C,
D dh vis{kk A izdfVr vfèkekfur (revealed preferred) gqvk gS] ;k A dh vis{kk B, C, D izdfVr
;k (revealed inferior) gq, gSaA
fp=k 5-1 esa bldh O;k[;k dh xbZ gSA X vkSj Y nksuksa oLrqvksa dh dhersa rFkk miHkksDrk vk; nh gqbZ gksus
ij] LM miHkksDrk dh dher&vk; js[kk gSA f=kHkqt OLM miHkksDrk osQ pquko dk {ks=k gS tks mldh
nh gqbZ dher vk; fLFkfr LM ij rFkk X rFkk Y oLrqvksa osQ fofHkUu la;ksxksa dks n'kkZrk gSA vFkkZr~ miHkksDrk
f=kHkqt OLM esa LM js[kk ij A ,oa B la;ksxksa rFkk bl js[kk ls uhps C ,oa D la;ksxksa esa ls fdlh Hkh
,d la;ksx dk pquko dj ldrk gSA ;fn og la;ksx A dk pquko djrk gS rks ;g B dh vis{kk izdfVr
vfèkekfur gSA C ,oa D la;ksx] A dh vis{kk izdfVr ?kfV;k gSa D;ksafd os dher&vk; js[kk ls uhps gSa ijarq
E la;ksx miHkksDrk osQ fy, vfèkd eg¡xk gS D;ksafd ;g mldh dher&vk; LM ls mQ¡ps gSA blfy, A
la;ksx lHkh la;ksxksa dh rqyuk esa izdfVr vfèkekfur gSA
fp=k 5-1
L
A E
Good Y C D B
O Good X M
izks- fgDl osQ vuqlkj] tc ,d miHkksDrk voyksfdr ekfoZQV O;ogkj osQ vkèkkj ij ,d fuf'pr la;ksx osQ
fy, vius vfèkeku dks izdV djrk gS rks og ,slk l'kDr vkns'k (strong ordering) osQ varxZr djrk
gS tc pquh gqbZ fLFkfr dks OLM f=kHkqt ij ;k vanj lHkh vU; fLFkfr;ksa ls vfèkekfur n'kkZ;k tkrk gSA vr%
tc miHkksDrk vius fuf'pr vfèkeku dks la;ksx A osQ fy, f=kHkqt OLM ij ;k vanj izdV djrk gS] rks
og vU; lHkh la;ksxksa tSls B, C vkSj D vLohdkj djrk gSA blfy, A dk pquko l'kDr vknsf'kr gSA
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