現代経済学の方法論的影響‐戦後政治学における選択

ࠔ⌟௥⤊ῥᏕࡡ᪁ἪㄵⓏᙫ㡢̺ᡋᚃᨳ἖Ꮥ࡞࠽ࡄࡾ㐽ᢝ⌦ㄵࡡᒈ㛜̺ࠕ
ྞཿᒁኬᏕኬᏕ㝌⤊ῥᏕ◂✪⛁༡ኃᚃ᭿ㄚ⛤
こᮇ࿰ぜ
㸦㸣ࡢࡋࡴ࡞
ྙ⌦Ⓩ㐽ᢝㄵ rational choice theory ࡢ㸡
ெ㛣ࡢ⮤ࡼࡡ⾔Ⅵࢅྙ⌦Ⓩ࡞㐽ᢝࡌࡾ࡛࠷࠹௫ᏽࢅ㸡
♣ఌ⛁Ꮥࡡ྘ฦ㔕࡞ᚺ⏕ࡊࡒ㐽ᢝ⌦ㄵࡡ⥪⛘࡚㸡(1)㐽ᢝࡢ┘Ⓩྙ⌦Ⓩ࡞⾔ࢂࡿࡾ࡛⩻࠻ࡾࡆ࡛㸡
(2)᪁ἪㄵⓏ಴ெ୹⩇ࡡ❟ሔࢅ᤿ࡾࡆ࡛࡝࡜ࢅ⌦ㄵⓏᰍ࡛ࡊ࡙㸡≁࡞ྙ⾏ᅗࢅ୯ᚨ࡛ࡊ࡙ 1950
ᖳ௥௧㜾♣ఌᏕࡷெ㢦Ꮥ࡛࠷ࡖࡒᗀ⠂ᅑࡡ♣ఌ⛁Ꮥฦ㔕࡚ᒈ㛜ࡊ࡙ࡀࡒ㸣ࡆࡡྙ⌦Ⓩ㐽ᢝㄵ
ࡢ㸡⤊ῥᏕⓏ࡝࢓ࣈ࣭ࣞࢲࢅᨳ἖Ꮥ࡞ཱིࡽථࡿࡒࡵࡡ࡚࠵ࡽ㸡≁࡞ᨳ἖Ꮥ࡞࠽࠷࡙ࡢපභ㐽
ᢝㄵ࡛ࡵ࿣ࡣࡿ࡙࠷ࡾ㸣ࡐࡊ࡙⌟ᅹ㟸ᖏ࡞ᗀ⠂ᅑ࡞ཀྵࡩ◂✪ࢅᑏ⛤࡞ྱࢆࡓᏕ㝷Ⓩฦ㔕ࢅ
ᥞ౩ࡊ࡙࠽ࡽ㸡ᨳ἖Ꮥ࡚⌟ᅹ࡞⮫ࡾࡱ࡚㔔さ࡝న⨠ࢅ༥ࡴ⤾ࡄ࡙࠷ࡾ㸣
G. J. ࣐࣭ࣚࡢ㸡ᡋᚃ௧㜾ࡡࡆࡡᏕ㝷Ⓩ࡝ິྡྷࡢ㸡⤊ῥᏕ࡛ᨳ἖Ꮥࡡ◂✪ࣈࣞࢡ࣑ࣚ࠿්
ࡦභ㏳ࡡ᪁Ἢࢅᣚࡗ࡛࠷࠹᩺ࡊ࠷ᑻ㟻ࢅࡵࡒࡼࡊ࡙࠷ࡾ࡛㏑࡬ࡾ㸣࡛࠷࠹ࡡࡵ㸡1890 ᖳ㡥
ࡱ࡚⤾ࡂ࠷ࢂࡹࡾ㝀⏲㠁࿤௧㜾㸡࣒࢕ࣤࢪࢹ࣭࣑ࣛࡡ⤊ῥᏕ࡛ᨳ἖Ꮥ࠿␏࡝ࡖࡒ◂✪ゝ⏤
࡛ᡥἪࢅ⥌ᣚࡌࡾࡻ࠹࡞࡝ࡖ࡙࠾ࡼࡢ㸡୦⩽ࡡ㊝㞫ࡢ㞫ࡿ㸡⤊ῥᏕ࡚ࡵᨳ἖Ꮥ࡚ࡵ࣎ࣛࢷ
࢔࢙࢜ࣜ࣬ࢤࢿ࣐࣭ࡢ୯ᚨⓏ࡞᡽ࢂࡿ࡝ࡂ࡝ࡖ࡙࠷ࡒ㸣ࡊ࠾ࡊ 1960 ᖳࡱ࡚࡞ࡆࡡ≟Ἓࡢን
໩ࡊࡒ㸣௑ࡷ⤊ῥᏕ⩽࠿ᨳ἖Ꮥࡡ୹㢗࡞⤊ῥᏕࡡ᪁Ἢࢅᙔ࡙ࡢࡴ࡙◂✪ࡌࡾࡆ࡛࡚㸡༟࡞
◂✪ࡡᑊ㇗࠿ᨳ἖࡛⤊ῥ࡞㛭ࢂࡾ࡛࠷࠹ࡓࡄ࡚࡝ࡂ㸡ᩐᏕࡡ౐⏕ࢅྱࢆࡓ⤊ῥᏕࡡᇱᮇⓏ
࡝◂✪᪁Ἢ࠿ཫ᪁࡚භ᭯࣬ᚺ⏕ࡈࡿጙࡴ࡙࠷ࡾࡡ࡚࠵ࡾ(Miller 1997, 1173)㸣
ࡐࡆ࡚ᮇ✇ࡢ㸡ᡋᚃᨳ἖Ꮥ࡞࠽ࡄࡾྙ⌦Ⓩ㐽ᢝㄵ࠿࡜ࡡࡻ࠹࡞ᒈ㛜ࡊࡒ࠾ࢅ㏳ࡋ࡙㸡⤊
ῥᏕࡡฦᯊ᪁Ἢ࡚࠵ࡾ㐽ᢝ⌦ㄵ࠿㸡ᨳ἖Ꮥ࡞୙࠻ࡒᙫ㡢ࢅ⩻ᐳࡌࡾ㸣௧ୖ࡚ࡢ㸡ḗࡡࡆ࡛
ࢅㄕ᪺ࡌࡾ㸣ิ᭿ྙ⌦Ⓩ㐽ᢝㄵ⩽࡛న⨠ࡘࡄࡼࡿࡾ࢓࣭ࣞ㸡ࣇ࢞ࣔࢻࣤࡼ⤊ῥᏕ⩽࠿㸡ᨳ
἖Ꮥ࡞ኬࡀ࡝࢕ࣤࣂࢠࢹࢅ୙࠻ࡒ㸣ࡐࡊ࡙ᨳ἖Ꮥ࡚ࡢ㐽ᢝ⌦ㄵࡢཚᐠ࡝ࠔ⛁ᏕⓏࠕ◂✪᪁
Ἢ࡛ࡊ࡙⌦よࡈࡿ࡙࠷ࡾ㸣
㸧㸣ิ᭿࡞࠽ࡄࡾྙ⌦Ⓩ㐽ᢝㄵ࡛⤊ῥᏕࡡᙲ๪
ྙ⌦Ⓩ㐽ᢝㄵ࠿ᨳ἖Ꮥ࡚ᗀࡱࡖࡒࡡ࡞ࡢ㸡ิ᭿࡞࠽ࡄࡾ⤊ῥᏕ⩽ࡡᙲ๪࠿ኬࡀ࠷࡛ゕࢂ
ࡿ࡙࠷ࡾ1㸣50̺60 ᖳ௥ࢅ㏳ࡋ࡙㸡K. J.࢓࣭ࣞࡷ J. M.ࣇ࢞ࣔࢻࣤࡢᨳ἖Ꮥࡡฦᯊ᪁Ἢ࡞ኬ
ࡀࡂᙫ㡢ࢅ୙࠻㸡ྜྷࡋࡂࣇ࢞ࣔࢻ࡛ࣤ G. ࢰࣞࢴࢠ࡞ࡻࡾපභ㐽ᢝฦ㔕ࡡ㛜ᢽࡵ㸡ᨳ἖ࢨ
ࢪࢷ࣑ࡡຝ⋙໩ࢅ┘ᣞࡊࡒ 60 ᖳ௥ࡡ⤊ῥᏕⓏฦᯊࢅ❻⥬࡛ࡊ࡙ᒈ㛜ࡊࡒ㸣ⴥష࡛ࡊ࡙ࡢ㸡
97
1951 ᖳ࡞᭡࠾ࡿࡒ࢓࣭ࣞࡡࠖ♣ఌⓏ㐽ᢝ࡛಴ெⓏフ౮ࠗ࠿ྙ⌦Ⓩ㐽ᢝㄵࡡᄊ▦࡛ࡈࡿ㸡ࡐ
ࡡᚃ 1957 ᖳ A. ࢱࢗࣤࢫࡡࠖẰ୹୹⩇ࡡ⤊ῥ⌦ㄵࠗ
㸡1962 ᖳࣇ࢞ࣔࢻࣤ㸡ࢰࣞࢴࢠࡡࠖප
භ㐽ᢝࡡ⌦ㄵ㸯ྙណࡡ⤊ῥㄵ⌦ࠗ㸡1962 ᖳ W. H. ࣚ࢕࣭࢜ࡡࠖᨳ἖㏻ྙࡡ⌦ㄵࠗ2㸡1965
ᖳ M. ࢛ࣜࢮࣤࡡࠖ㞗ྙⓏ⾔Ⅵㄵ㸯පභ㈀࡛㞗ᅆ⌦ㄵ࡛ࠗ㸡⤊ῥᏕ⩽ࢅ୯ᚨ࡛ࡊ࡙㔔さ࡝
ⴥష࠿ḗࠍ࡛Ⓠ⾪ࡈࡿ࡙࠷ࡾ㸣ࡱࡒ㸡ࣇ࢞ࣔࢻࣤࡢࢰࣞࢴࢠ࡛࡛ࡵ࡞ᨳ἖ࡡሔ࡞࠽ࡄࡾ㟸
ᕰሔⓏណᛦỬᏽ non-market decision making ࡞㛭ࢂࡾ◂✪ఌࢅ❟ࡔ୕ࡅ㸡1965 ᖳ࡞පභ㐽ᢝ
Ꮥఌࢅ⤎ᠺࡊ࡙࠽ࡽ㸡60 ᖳ௥ࡡᚃ༖࡞ࡢࡌ࡚࡞⤊ῥᏕⓏ࢓ࣈ࣭ࣞࢲ࡚ᨳ἖ฦᯊࢅࡌࡾሔ࠿
ᩒ࠻ࡼࡿ࡙࠷ࡒ3)㸣70 ᖳ௥࠾ࡼࡢ㸡ࡌ࡚࡞ࢣ࣭࣑ࡡ⌦ㄵࡡࡻ࠹࡞⌟ᅹࡡ࣐ࢠࣞ⤊ῥᏕࢅ≄
ᘤࡊ࡙࠷ࡾ⌦ㄵ࠿ᨳ἖Ꮥࡡฦᯊࡡᑊ㇗࡞⏕࠷ࡼࡿ࡙㆗ㄵࡈࡿ࡙ࡵ࠷ࡒ㸣
ྎࡡᅒࡢ㸡㞟ヽ American
40
Political Science Review ࡞࠽ࡄ
ࡾྙ⌦Ⓩ㐽ᢝㄵ㛭౿ࡡㄵᩝࡡ
ቌຊࢅ♟ࡊ࡙࠷ࡾ࠿㸡60̺70
ᖳ௥࡞࠾ࡄ࡙ኬࡀ࡝ఘࡦࢅぜ
ࡎ࡙࠷ࡾࡆ࡛࠿ࢂ࠾ࡾ㸣ࡆࡿ
ࡢ㸡୕࡚ᣪࡅࡒ⤊ῥᏕ⩽ࡒࡔ
࡞ࡻࡖ࡙㸡ྙ⌦Ⓩ㐽ᢝㄵ࡞㛭
ධ
మ
࡞
༥
ࡴ
ࡾ
ࣂ
䤢
ࢬ
ࣤ
ࢷ
䤢
ࢩ
30
20
10
ࡌࡾࢷ࢞ࢪࢹ࠿ฝ∟ࡈࡿࡒࡆ
0
࡛ࡷ㸡Ꮥఌ࠿ス❟ࡈࡿࡒࡆ࡛
1952 1957 1962 1967 1972 1977 1982 1987 1992
࡚㸡㛭ᚨ࠿㧏ࡱࡖࡒࡒࡴ࡛⩻
࠻ࡼࡿࡾ㸣ࡐࡊ࡙ 80 ᖳ௥௧㜾
ᅒ㸦㸣American Political Science Review ࡡྙ⌦Ⓩ㐽ᢝㄵ࡞
ࡵ㸡ྙ⌦Ⓩ㐽ᢝㄵ࡞㛭ࢂࡾㄵ
㛭ࡌࡾㄵᩝ㸝ฝ඼ D. Green and I. Shapiro[1994]㸞
ᩝ࠿ቌ࠻࡙࠽ࡽ㸡90 ᖳ௥ࡱ࡚
࡞ࡢ㸡30̺40㸚࠿ྙ⌦Ⓩ㐽ᢝ⣌ࡡㄵᩝ࡛࡝ࡖ࡙࠷ࡾ㸣ࣂ࣭ࢬࣤࢷ࣭ࢩࡡቌຊ࡞ᚉࡖ࡙㸡ྙ
⌦Ⓩ㐽ᢝㄵ࡚ฦᯊࡈࡿࡾ୹㢗ࡵ⛸㢦࠿ቌ࠻㸡ᢖ⚂⾔ິ㸡ᨳඨ࡝࡜ࡡฺ─ᅆమࡡ௙㸡ࣞࢡ࣬
࣭ࣞࣛࣤࢡ࡝࡜ᖕᗀࡂฺ⏕ࡈࡿ࡙࠷ࡾ㸣
ᡋᚃᨳ἖Ꮥ࡞≁ᚡⓏ࡝ࡆ࡛ࡢ㸡⤊ῥ࡛ᨳ἖࡞භ㏳ࡌࡾ୹㢗ࢅཱིࡽ୕ࡅࡾ࡛࠷࠹ࡻࡽ㸡ฦ
ᯊ᪁Ἢ࠿Ἰ┘ࡈࡿ࡙࠷ࡾࡆ࡛ࡓ㸣ࡌ࡚࡞ᣪࡅࡒ࣐࣭ࣚ࠿㏑࡬ࡾࡻ࠹࡞㸡ࡆࡿࡢ㸡㐽ᢝ⌦ㄵ
ࢅ௒ࡊ࡙⤊ῥᏕ࡛ᨳ἖Ꮥ࠿᪁Ἢࢅභ᭯ࡌࡾ᩺ࡊ࠷ᑻ㟻ࢅ♟ࡊ࡙࠷ࡾ㸣᪝ᮇ࡚Ẓ㍉Ⓩ᪡࠷᫤
᭿࡞ྙ⌦Ⓩ㐽ᢝㄵࢅ⣺௒ࡊࡒ୔Ꮹୌ㑳ࡵ㸡⤊ῥᏕࡢ㸡㈀ࡷࢦ࣭ࣄࢪࡡ⏍⏐ࡷฦ㒼ࢅ᡽࠹࡛
98
ࡆࢀ࡞ᨳ἖Ꮥ࡛㐢࠷࠿࠵ࡾ࠿㸡ᡋᚃᨳ἖Ꮥ࡞࠽࠷࡙㸡ྙ⌦Ⓩ㐽ᢝㄵࢅࠔ⤊ῥᏕⓏࠕ࡛࿣ࡩ
࡛ࡀ㸡⤊ῥᏕ࡛୹㢗ࢅྜྷࡋࡂࡊ࡙࠷ࡾ࡛࠷࠹ណ࿝࡚ࡢ࡝ࡂ㸡ࡐࡡ᪁Ἢࢅභ᭯ࡊ࡙࠷ࡾⅤ࡞
Ἰ┘ࡌࡾ㸡࡛ᙁㄢࡌࡾ(୔Ꮹ 1981, 2)㸣ࡆࡡࡻ࠹࡞ྙ⌦Ⓩ㐽ᢝㄵ࠿ᡋᚃᨳ἖Ꮥ࡚ኬࡀࡂ᡽ࢂ
ࡿ࡙ࡀࡒࡆ࡛ࡢ㸡㐽ᢝ⌦ㄵ࠿⤊ῥᏕࡓࡄ࡚࡝ࡂ㸡ᨳ἖Ꮥ࡞ࡵᚺ⏕ྊ⬗࡝ᡥἪࢅ୙࠻ࡒࡆ࡛
ࢅណ࿝ࡊ࡙࠷ࡾ㸣
㸨㸣ࠔ⛁ᏕⓏࠕ࢓ࣈ࣭ࣞࢲ࡛ࡊ࡙ࡡྙ⌦Ⓩ㐽ᢝㄵ
ᨳ἖Ꮥ࡚ࡢ㸡㐽ᢝ⌦ㄵࡡ࢓ࣈ࣭ࣞࢲ࠿ቌኬࡊࡒࡆ࡛ࡢ㸡ᨳ἖ᏕࡡฦᯊᡥἪ࡞ኬࡀ࡝ᙫ㡢
ࢅ୙࠻ࡒ࡛ゕࢂࡿ࡙࠷ࡾ㸣ᨳ἖Ꮥ⩽ G. ࢓࣭࣓ࣤࢺࡢ㸡60 ᖳ௥௧㜾ྙ⌦Ⓩ㐽ᢝㄵࡡ࢓ࣈࣞ
࣭ࢲࢅ᤿ࡖࡒᨳ἖Ꮥ⩽ࡢࡻࡽ⤊ῥᏕ࡞㎾ࡘ࠷࡙ࡹࡀ㸡
ࠔࢠ࣭ࣤࡡ⛁Ꮥ㠁࿤࡞జࡒ࣑࣭࣒ࣥࣤ
ࢹࠕࢅ⏍ࡲฝࡌࡆ࡛࡛࡝ࡖࡒ࡛⾪⌟ࡊ࡙㸡ᨳ἖Ꮥ࡞࠽ࡄࡾྙ⌦Ⓩ㐽ᢝㄵࡡ࢕ࣤࣂࢠࢹࢅ୹
ᘿࡊ࡙࠷ࡾ(Almond 1990, 123)㸣࢓࣭࣓ࣤࢺࡢ㸡⛁Ꮥ㠁࿤࡞ౚ࠻ࡾ࡮࡜ྙ⌦Ⓩ㐽ᢝㄵ࠿ኬࡀ
࡝ᙫ㡢ࢅ୙࠻ࡒ⌦⏜࡛ࡊ࡙㸡
ྙ⌦Ⓩ㐽ᢝㄵ࠿௫ㄕ̺ⁿ⧚Ⓩ᪁Ἢࢅᨳ἖Ꮥ࡞ᑙථࡊࡒࡆ࡛࡚㸡
ࡐࡿ࠿ࡐࡿࡱ࡚ࡡᨳ἖Ꮥࡡฦᯊ᪁Ἢ࡛ࡢධࡂ␏࡝ࡾ᪁Ἢࢅᨳ἖Ꮥ࡞ࡵࡒࡼࡊࡒⅤࢅᣪࡅ࡙
࠷ࡾ(Almond 1990, 123)㸣ྙ⌦Ⓩ㐽ᢝ⌦ㄵࡢ㸡ኣࡂࡡ⌟௥⤊ῥ⌦ㄵ࠿ࡐ࠹࡚࠵ࡾࡻ࠹࡞㸡ኣ
ࡂࡡ⤊㥺Ⓩ஥ᐁࢅᑛᩐࡡ⌦ㄵⓏ๑ᥞ࠾ࡼ㸡ཚᐠ࡝ㄵ⌦Ⓩ᥆ㄵ࡞ࡻࡖ࡙ᑙࡂᡥἪࢅ᤿ࡖ࡙࠷
ࡾ࡛ࡆࢀ࡞ 1 ࡗࡡኬࡀ࡝≁ᚡ࠿࠵ࡾ㸣ࡆࡡ௫ㄕ̺ⁿ⧚Ⓩ᪁Ἢࢅᣚࡖࡒྙ⌦Ⓩ㐽ᢝㄵ࠿㸡ᑙ
ࡀࡓࡈࡿࡒ⤎ᯕ࠿ḿࡊࡄࡿࡣ௫ㄕ࠿㐲ᙔ࡚࠵ࡽ㸡㏣࡞ㄏࡽ࡚࠵ࡿࡣ௫ㄕ࠿୘㐲ᙔ࡚࠵ࡾ࡛
࠷࠹ࡻ࠹࡝ࠔ⛁ᏕⓏࠕฦᯊᡥἪࢅᨳ἖Ꮥ࡞୙࠻ࡾࡆ࡛࡚㸡ᨳ἖Ꮥ࡚᩺ࡊ࠷ࣂࣚࢱ࢕࣑ࢅ⏍
ࡲฝࡌ࡮࡜ࡡ࢕ࣤࣂࢠࢹࢅ୙࠻ࡒ࡛࠷࠹ᣞᦤ࡚࠵ࡾ㸣ྜྷᵕ࡞㸡ࣀࣜࢨ࣭ࣔࢼࡢ㸡ᨳ἖Ꮥ࡞
࠽ࡄࡾྙ⌦Ⓩ㐽ᢝㄵࡡ᪁Ἢࢅ㸡♣ఌᏕ⩽ T. ࣂ࣭ࢮࣤࢫ࡞௥⾪ࡈࡿࡾࡻ࠹࡝ᶭ⬗୹⩇࣓ࢸ
ࣜ࡞ᑊẒࡈࡎ㸡ྙ⌦Ⓩ㐽ᢝㄵࡡ௫ㄕ̺ⁿ⧚Ⓩ᪁Ἢࢅࠔ⛁ᏕⓏࠕ࡛≁ᚡࡘࡄ࡙࠷ࡾ(Harsanyi
1969, 536)㸣
࢓࣭࣓ࣤࢺࡡ⾪⌟࠿ጂᙔ࡚࠵ࡾ࠾ࡢื࡞ࡊ࡙ࡵ㸡ᡋᚃᨳ἖Ꮥ࡞࠽࠷࡙ྙ⌦Ⓩ㐽ᢝㄵ࠿ུ
ࡄථࡿࡼࡿࡒ⫴ᬊ࡞ࡢ㸡㐽ᢝ⌦ㄵ࠿ࠔ⛁ᏕⓏࠕ࢓ࣈ࣭ࣞࢲ࡛ࡊ࡙ᤂ࠻ࡼࡿࡒࡆ࡛࠿ኬࡀ࡝
ណ࿝ࢅᣚࡖ࡙࠷ࡾ㸣20 ୠ⣎ྙ⾏ᅗᨳ἖Ꮥࡢ㸡ୌ㟻࡚⤊㥺⛁Ꮥ࡛ࡊ࡙ᨳ἖Ꮥ࠿❟⬦ࡌࡾࡒࡴ
ࡡ᪁Ἢࢅ㏛ịࡊ࡙ࡀࡒࡒࡴࡓ㸣୯ㆺ⩇࿰ࡢ㸡
ࠔ⛁Ꮥ໩ࠕࢅ࣭࣭࢞࣠ࢺ࡞ࡊ࡙ྙ⾏ᅗᨳ἖Ꮥࡡ
Ṍྍࢅ(Ϩ)ⲙ๭᭿(1880 ᖳ௥ࡱ࡚)㸡(ϩ)ᙟᠺ᭿(1880 ᖳ௥-1910 ᖳ௥)㸡(Ϫ)ᒈ㛜᭿(1910 ᖳ௥
-1945 ᖳ௥)㸡(ϫ)ᡋᚃ᭿(1945 ᖳ௥௧㜾)࡞ฦࡄ࡙ᩒ⌦ࡊ㸡㐽ᢝ⌦ㄵࢅᨳ἖ᏕࡡṌྍࡡ୯࡞ᇔ
ࡴ㎲ࢆ࡚࠷ࡾ㸣୯ㆺ࡞ࡻࡿࡣ㸡᫤᭿༇ฦࡡ(Ϩ)᭿࠾ࡼ(ϩ)᭿ࡢ㸡ᨳ἖Ꮥ࠿ࠔゕㄕ discourseࠕ
99
࠾ࡼࠔᏕၡ disciplineࠕ࡫ࢨࣆࢹࡌࡾንᐖ᭿࡚࠵ࡽ㸡ࡐࡿࡱ࡚ࡡఎ⤣Ⓩ࡝ṌྍᏕᆵᨳ἖Ꮥ࠾
ࡼ⌟ᐁᨳ἖ࡡ⤊㥺୹⩇Ⓩㄕ᪺࡞ᇱࡘࡂᨳ἖Ꮥ࡫࡛⛛⾔ࡌࡾࡆ࡛࡚㸡⛁ᏕⓏᨳ἖Ꮥࢅ┘ᣞࡌ
ലྡྷ࠿ᙁࡱࡖࡒ᫤᭿࡚࠵ࡾ㸣ḗ࡞(Ϫ)᭿ࡢ㸡ᡋ㛣᭿࡞ࠔ࢓࣒ࣛ࢜໩ࠕࡊࡒᨳ἖Ꮥ࠿ᠺ⇅ࡌ
ࡾ㐛⛤࡚㸡ኣඔ୹⩇Ⓩ⮤⏜Ằ୹ᨳㄵ࠿Ⓡሔࡊ㸡ᚨ⌦Ꮥࡷ⤣ゝᏕࢅ㥉౐ࡊࡒ⛁ᏕⓏᨳ἖⌦ㄵ
ࡡ⏍ᠺࡱࡌࡱࡌ⇍ࢅᣚࡖ࡙㆗ㄵࡈࡿ࡙࠷ࡒ᫤᭿࡚࠵ࡖࡒ㸣ࡐࡊ࡙ྙ⌦Ⓩ㐽ᢝㄵࡡᗀ࠿ࡽࡢ
ᡋᚃࡡ(ϫ)᭿࡞ᙔࡒࡾ࠿㸡ᚉᮮࡡᨳ἖Ꮥ࡛ධࡂ㐢࠹௥᭨Ⓩ࡝⛁ᏕⓏ࢓ࣈ࣭ࣞࢲࢅᥞ౩ࡌࡾ
ࡵࡡ࡛ࡊ࡙ྙ⌦Ⓩ㐽ᢝㄵ࠿ぜ࡝ࡈࡿ࡙࠷ࡾ(୯ㆺ 2005, 3)㸣
ᡋᚃᨳ἖Ꮥ࠿㸡ᨳ἖Ꮥහ㒂ࡡ⌦ㄵⓆᒈࡓࡄ࡚࡝ࡂ㸡⤊ῥᏕ⌦ㄵࢅᚺ⏕ࡊጙࡴࡒࡆ࡛ࡢ㸡
ᨳ἖Ꮥ≺⮤࡛࠷࠹ࡻࡽ♣ఌ⛁Ꮥධమࡡ㉽ເ࡛ࡊ࡙ゕ࠻ࡾࡆ࡛࡚࠵ࡾ㸣ྙ⌦Ⓩ㐽ᢝㄵ࠿ᒈ㛜
ࡊጙࡴࡾ๑࠾ࡼࡌ࡚࡞㸡♣ఌ⛁Ꮥධమ࡚⤊ῥᏕࡡ⌦ㄵࡷ᪁Ἢࡢ┞ᑊⓏ࡞ᙁ࠷ᙫ㡢ງࢅᣚࡖ
࡙࠷ࡒ㸣⾪㸦ࡢ K. ࢺ࢕ࢴࢲࣖࡼ(1971)࡞ࡻࡾ 1990̺65 ᖳࡡ♣ఌ⛁Ꮥࡡฦ㔕ืࡡ㈁⊡࡞ࡗ
࠷࡙ࡡㄢᰕ࡚࠵ࡾ㸣
ゝ
୹さ࡝㈁⊡
⌦ㄵ࡫ࡡ㛭ᚨ
᪁Ἢ࡫ࡡ㛭ᚨ
ᠺᯕ࡫ࡡ㛭ᚨ
ฦ㔕
1900-65
1900-29
1930-65
1900-29
1930-65
1900-29
1930-65
1900-29
1930-65
ᚨ⌦Ꮥ
13
7
6
6
3
6
6
6
6
⤊ῥᏕ
12
5
7
4
5
4
6
5
7
ᨳ἖Ꮥ
11
7
4
7
2
2
4
4
4
ᩐ⌦
11
4
7
2
5
4
7
4
6
♣ఌᏕ
7
6
1
4
1
5
1
6
1
ူᏕ
5
3
2
3
2
2
2
0
1
ெ㢦Ꮥ
3
1
2
1
2
0
2
1
2
ゝ
62
33
29
27
20
23
28
26
27
⤣ゝᏕ
⾪㸦㸣1900̺65 ᖳ࡞࠽ࡄࡾฦ㔕࡛㛭ᚨࡡ㧏ࡈ࠾ࡼࡲࡒ୹さ♣ఌ⛁Ꮥࡡ㈁⊡
㸝ฝ඼㸞K. W. Deutsch, J. Platt and D. Senghass[1971]
ㄢᰕ࡞ࡻࡿࡣ㸡♣ఌ⛁Ꮥ࡞ᐞ୙ࡊࡒ࡛⩻࠻ࡼࡿࡾ 62 ࡡ◂✪ࡡ࠹ࡔ㸡⤊ῥᏕ⩽࡞ࡻࡾࡵ
ࡡࡢᚨ⌦Ꮥ࡞ḗ࠷࡚ኣࡂ㸡ධ⯙Ⓩ࡞⤊ῥᏕࡡᙫ㡢ງ࠿Ẓ㍉Ⓩኬࡀ࠷㸣ࡈࡼ࡞ࣛࢪࢹࡡහゼ
ࢅࡲࡾ࡛㸡⥪ࡋ࡙ᚨ⌦Ꮥࡷᨳ἖Ꮥࡢ㸡1900̺29 ᖳࡱ࡚࡞⤊ῥᏕࡻࡽࡵࣛࢪࢹ࡞ᣪࡅࡼࡿ࡙
࠷ࡾ◂✪࠿ኣ࠷࠿㸡1930̺65 ᖳ࡞࠾ࡄ࡙ࡢ㸡ᚨ⌦Ꮥ㸡ᨳ἖Ꮥ㸡♣ఌᏕ࡝࡜࡞Ẓ࡬࡙㸡⤊ῥ
100
Ꮥ࡛ᩐ⌦⤣ゝᏕ࠿┞ᑊⓏ࡞♣ఌ⛁Ꮥ࡚ᙫ㡢ງࢅᣚࡖ࡙࠷ࡾ㸣ࡱࡒᩐ⌦⤣ゝᏕࡡ㈁⊡ࡢ⤊ῥ
Ꮥࡻࡽࡵ఩࠷న⨠࡞࠵ࡾ࠿㸡ᩐᏕࡷ⤣ゝᏕࡡᚺ⏕ࡢ⤊ῥᏕࢅྱࡴ࡙྘♣ఌ⛁Ꮥฦ㔕࡞ࢂࡒ
ࡖ࡙࠽ࡽ㸡♣ఌ⛁Ꮥධమ࡞ᙫ㡢ࢅ୙࠻࡙࠷ࡒ࡛⩻࠻ࡼࡿࡾ㸣ࡆࡡㄢᰕ࡚ฦ࠾ࡾࡆ࡛ࡢ㸡➠
1 ࡞ 1930̺65 ᖳ࡞ലྡྷ࡛ࡊ࡙♣ఌ⛁Ꮥධమ࡚ᩐᏕ໩࡛⤊ῥᏕࡡᙫ㡢ງ࠿ቌࡊࡒࡆ࡛㸡➠ 2
࡞ྜྷ᫤᭿࡞┞ᑊⓏ࡞ᙫ㡢ງࢅ኶ࡖࡒᨳ἖Ꮥ࡛㸡㏣࡞ᙫ㡢ງࢅቌࡊࡒ⤊ῥᏕࡡ㛭౿࡚࠵ࡾ㸣
ྙ⌦Ⓩ㐽ᢝㄵ࠿ᗀ࠿ࡾ 50̺60 ᖳ௥ࡱ࡚࡞㸡ᨳ἖Ꮥ࡛⤊ῥᏕ࡞ࡆࡡࡻ࠹࡝┞ᑊⓏ㛭౿࠿࠵ࡖ
ࡒࡆ࡛ࡢ㸡㐽ᢝ⌦ㄵࡡᗀ࠿ࡽࡡさᅄࡡࡥ࡛ࡗ࡛⩻࠻ࡼࡿࡾ㸣
㸩㸣࠽ࢂࡽ࡞
ᮇሒ࿈࡚ࡢ㸡50̺60 ᖳ௥ࢅ୯ᚨ࡞㸡ྙ⌦Ⓩ㐽ᢝㄵࡡᒈ㛜ࢅᴣふࡌࡾࡆ࡛࡚㸡ᡋᚃᨳ἖Ꮥ
࡚⤊ῥᏕࡡ㐽ᢝ⌦ㄵ࠿ኬࡀ࡝ᙫ㡢ࢅ୙࠻࡙ࡀࡒࡆ࡛ࢅ♟ࡊࡒ㸣࣐࣭ࣚ࠿㏑࡬ࡾࡻ࠹࡞㸡
1960
ᖳ௥௧㜾㸡⤊ῥᏕ࡛ᨳ἖Ꮥࡢ㐽ᢝ⌦ㄵࢅ㏳ࡋ්࡙ࡦභ㏳ࡡ᪁Ἢ࡚⤎ࡦࡗ࠷࡙࠷ࡾ㸣㐽ᢝ⌦
ㄵ࠿ᨳ἖Ꮥ࡚ᗀ࠿ࡽࢅぜࡎ࡙࠷ࡾࡡ࡞ࡢ㸡ⁿ⧚Ⓩ࣬ᩐᏕⓏ᪁Ἢ࡛⤊ῥ࣓ࢸࣜ࡞౪ᣈࡊࡒྙ
⌦Ⓩ㐽ᢝࡡ࢓ࣈ࣭ࣞࢲ࠿㸡ᨳ἖Ꮥ࡚ࠔ⛁ᏕⓏࠕ࡝◂✪࢓ࣈ࣭ࣞࢲ࡛ࡊ࡙ぜ࡝ࡈࡿࡒࡆ࡛࠿
ኬࡀ࠷㸣ࡊ࠾ࡊྜྷ᫤࡞㸡ᩐᏕࡡ౐⏕ࡷ⤊ῥᏕ࠿ᙫ㡢ࢅ୙࠻ࡒࡆ࡛ࡢ㸡ᨳ἖Ꮥࡡࡲ࡝ࡼࡍ㸡
♣ఌ⛁Ꮥධమࡡ㉽ເ࡚ࡵ࠵ࡖࡒ㸣ࡆࡡࡻ࠹࡝Ⅴࢅ㊻ࡱ࠻ࡾ࡛㸡ᡋᚃᨳ἖Ꮥ࡚ࡡ㐽ᢝ⌦ㄵࡡ
ᗀ࠿ࡽࡢ㸡♣ఌ⛁Ꮥධమࡡലྡྷ࡛Ṅㄢࢅྙࢂࡎ࡝࠿ࡼ㸡ᨳ἖Ꮥහ㒂ࡡᏕၡⓏ≟Ἓ࡞ᙫ㡢ࡊ
࡙࠷ࡾ㸣
ࡆࡡࡻ࠹࡝ലྡྷࡢ㸡ᮇ✇࡚᡽ࢂ࡝࠾ࡖࡒ 80 ᖳ௥௧㜾ࡡྙ⌦Ⓩ㐽ᢝㄵࡡᒈ㛜࡞ࡗ࠷࡙ࡵ
ゕ࠻ࡾ㸣ᅒ 1 ࡞ࡻࡿࡣ㸡50 ᖳ௥࡞ጙࡱࡽ㸡60̺70 ᖳ௥࡞ᗀ࠿ࡽࢅぜࡎࡒྙ⌦Ⓩ㐽ᢝㄵࡢ㸡
80 ᖳ௥௧㜾࡞ࡵ්ࡦኬࡀ࡝ఘࡦࢅぜࡎ࡙࠷ࡾ㸣ࡊ࠾ࡊ 80 ᖳ௥௧㜾ࡡྙ⌦Ⓩ㐽ᢝㄵࡢ㸡ን
ᐖࡊࡒ࡛ᨳ἖Ꮥහ㒂࡚ࡊࡣࡊࡣᣞᦤࡈࡿࡾ㸣ࡐࡆ࡚ࡢ㸡70 ᖳ௥ࢅ୯ᚨ࡞ࡊࡒᅗᐓㄵࡡᚗᶊ
࡝࠷ࡊᅗᐓㄵࡡᅂᖉ࡛࿣ࡣࡿࡾᨳ἖Ꮥ࡞࠽ࡄࡾโᗐ୹⩇ࡡᚗ⮾࡝࡜ࡡᨳ἖Ꮥහ㒂ࡡ᩺ࡊ࠷
ᒈ㛜࠿㸡㐽ᢝ⌦ㄵࡡ᪁Ἢ࡞ᙫ㡢ࢅ୙࠻ࡾࡻ࠹࡞࡝ࡾࡡ࡚࠵ࡾ(㤷Ὺ 1987; ᐋᮇ 2001)㸣
1
D. C. ࣐࣭ࣖࣚࡢᨳ἖Ꮥ࡞࠽ࡄࡾྙ⌦Ⓩ㐽ᢝㄵࡡ➠ 1 ୠ௥࡞࢓࣭ࣞ㸡ࣇ࢞ࣔࢻࣤࡼ⤊ῥᏕ
⩽ࡡྞ๑ࢅᣪࡅ࡙࠷ࡾ(Mueller 1997)㸣
2
ࣚ࢕࣭࢜ࡢࡆࡡⴥషࢅࡢࡋࡴ㸡⌟ᅹࡱ࡚ 500 ヽ௧୕ࡡࢩ࣭ࣔࢻ࡚ࣜ 3700 ᅂ௧୕ࡵᘤ⏕ࡈ
ࡿ࡙࠽ࡽ㸡ᙴࡡᅹ௴ࡊࡒࣞࢲ࢘ࢪࢰ࣭ኬᏕࢅ୯ᚨ࡛ࡌࡾࣞࢲ࢘ࢪࢰ࣭ᏕὬ࡛࿣ࡣࡿࡾ㞗ᅆ
ࢅᙟᠺࡌࡾࡱ࡚࡞⮫ࡖࡒ(Maske and Durden 2003, 191)㸣
3)
ᙴࡼࡢࣥ࢒࣭ࢩࢼ࢓ᕝ⛁ኬᏕහࡡපභ㐽ᢝ◂✪ࢬࣤࢰ࣭ࢅ୯ᚨ࡛ࡊࡒ◂✪⩽ࡒࡔ࡚ᵋ
ᠺࡈࡿࡒࡒࡴ㸡ࡊࡣࡊࡣࣥ࢒࣭ࢩࢼ࢓ᏕὬ࡛ࡵ࿣ࡣࡿࡾ㸣
101
㸱ཤ⩻ᩝ⊡㸳
Almond, G. A. 1990. A discipline divided: schools and sects in political science. California: Sage
Publications, Inc.
Amadae, S. M. and B. B. de Mesquita. 1999. The Rochester School: The Origins of Positive
Political Theory. Annual Reviews of Political Science 2: 269-95.
Arrow, Kenneth J. [1951] 1963. Social choice and individual values. 2nd ed. New York: John Wiley
& Sons, Inc. 㛏ྞᐰ᪺ゼࠖ♣ఌⓏ㐽ᢝ࡛಴ெⓏフ౮ࠗ᪝ᮇ⤊ῥ᩺⪲♣㸡1977㸣
Buchanan, J. M. and G. Tullock. 1962. The calculus of consent: logical foundations of constitutional
democracy. Ann Arbor: University of Michigan Press. ⡷ཋῗ୏㑳࡮࠾ゼࠖපභ㐽ᢝࡡ⌦
ㄵ㸯ྙណࡡ⤊ῥㄵ⌦ࠗ᮶Ὂ⤊ῥ᩺⪲♣㸡1979㸣
Coats, A. W. B. 1992. On the History of Economic Thought. British and American Economic
Essays, vol. Ϩ. London; New York: Routledge.
Deutsch, K. W., J. Platt and D. Senghaas. 1971. Conditions Favoring Major Advances in Social
Science. Science, New Series 171(3970): 450-459.
Dorfman, J. 1946-1959. The Economics Mind in American Civilization, 1606-1933. 5 vols., New
York: The Viking Press.
Downs, A. 1957. An Economic Theory of Democracy. New York: Harper & Row. ཿ⏛⢥ྒྷゼࠖẰ
୹୹⩇ࡡ⤊ῥ⌦ㄵࠗᠺᩝᇸ㸡1980㸣
Friedman, J. 1995. Economic Approaches to Politics. Critical Review 9(1/2): 1-24.
Green, Donald P. and Ian Shapiro. 1994. Pathologies of rational choice theory: a critique of
applications in political science. New Haven: Yale University Press.
Harsanyi, J. C. 1969. Rational-Choice models of Political Behavior vs. Functionalist and Conformist
Theories. World Politics 21: 513-538.
March, J. G. and J. P Olsen. 1984. The New Institutionalism: Organizational Factors in Political
Life. American Political Science Review 78: 734-749.
March, J. G. and J. P. Olsen. 1989. Rediscovering Institutions: Organizational Basis of Politics.
New York: Free Press. 㐪ᒜ㞕ᚷゼࠖࡷࢂࡼ࠾࡝โᗐ㸯࠵࠷ࡱ࠷⌦ㄵ࠾ࡼࡡᥞゕࠗ᪝ษ
ᕝᴏ᩺⪲♣㸡1994㸣
Maske, Kellie and Durden, Garey. 2003. The Contributions and Impact of Professor William H.
Riker. Public Choice 117: 191-220.
Miller, Gary J. 1997. The Impact of Economics on Contemporary Political Science. Journal of
Economic Literature 35: 1173-1204.
Mueller, D. C. (ed) 1997. Perspective on Public Choice: A Handbook. New York: Cambridge
University Press. 㛭ㆺⓇ࣬ኬᒷ㞕ḗ㑳ゼࠖࣀࣤࢺࣇࢴࢠපභ㐽ᢝࡡᒈ᭻➠ 1 ᕬࠗኣ㈙ฝ
∟㸡1997㸣
Olsen, M. 1965. The logic of collective action: Public goods and the theory of groups. Cambridge:
Harvard University Press. ౪⏛༡࣬᲻⬝ಆ㞖ゼࠖ㞗ྙ⾔Ⅵㄵ㸯පභ㈀࡛㞗ᅆ⌦ㄵ࣐ࠗࢾ
ࣜࣥ࢒᭡ᡛ㸡1983㸣
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Economy, edited by J. E. Art and K. A. Shepsle. Cambridge :Cambridge University Press.
୯ㆺ⩇࿰㸡2005㸣ࠖ࢓࣒ࣛ࢜ᨳ἖Ꮥྍᗆㄕ࣐ࠗࢾࣜࣥ࢒᭡ᡛ㸣
㤷Ὺົ㸡1987㸣ࠔ࢓࣒ࣛ࢜ᨳ἖Ꮥ࡞࠽ࡄࡾࠔโᗐㄵࠕࡡᚗὩࠕࠖᛦ᝷ࠗ(761)㸯126-151㸣
୔Ꮹୌ㑳⥽㸡1981㸣ࠖྙ⌦Ⓩ㐽ᢝࡡᨳ἖Ꮥ࣐ࠗࢾࣜࣥ࢒᭡ᡛ㸣
ᐋᮇኯ㑳㸡2001㸣ࠔẒ㍉ᨳ἖Ꮥ࡞࠽ࡄࡾ᩺โᗐㄵࡡྊ⬗ᛮࠕࠖᨳ➿⛁Ꮥࠗ8(3)㸯329-341㸣
102