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Aerica Ecic Jral: Alie Ecics 2012, 4(3): 127tt://x.i.r/10.1257/a.4.3.1
Raising the Barcode Scanner:
Technology and Productivity in the Retail Sector
B Emek Basker*
Barces a barce scaers trasre te rcer istri te 1970s. I se stre-level ata r te 1972, 1977, a 1982Cess Retail Trae, atce t ata stre scaer istalla-tis, t estiate scaers eect labr rctivit. I f tatscaers icrease a stres labr rctivit, averae, barxiatel 4.5 ercet i te frst ew ears. Te eect was larer
i stres carri re acae rcts, csistet wit te res-ece etwr exteralities. Srt-r ais were sall relative t
fxe csts, sesti tat te ieiet t wiesrea ati te ew tecl was rftabilit, t criati rbles.(JEL J24, L24, L81, O33)
T pp p w g g g gg p -, w w -1970, p p.
S p , -- g ,pg p p. A (p-) p, z, g q. A - US p p w .
P w. T w p g F, Hwg, Kz (2006), w p- gw g 1990 w (p g
xp) x (p ). T g - w g gp w pp , g p g w p
* U M, 118 P Bg, C, MO 65211 (-: @.). Tpp w w w I w ASA/NSF/C B Fw g C E S(CES) US C B. I g g g pp CES p. A p xp p w US C B. A w - . I J M S W p g F Mg I p.T S A, Rg B, B C, T F, L F, S G, JHwg, Sw K, M Lw, J L, D M, G M, J M, J Mg,
J P, B S, H S, T S, D W, pp US CB, B E A, B L S, UNC-G, UT-Ag, 2011 IIOC(B), 2011 NBER S, P, I p-, w p . A g w.
T , w , pg p://x..g/10.1257/pp .4.3.1.
http://dx.doi.org/10.1257/app.4.3.1mailto:[email protected]://dx.doi.org/10.1257/app.4.3.1http://dx.doi.org/10.1257/app.4.3.1mailto:[email protected]://dx.doi.org/10.1257/app.4.3.17/30/2019 Bask Er Barcode Scanner
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2 AmERICAn EConomIC JouRnAL: AppLIEd EConomICS JuLy 2012
gp g, g, , .D, J, K (2004) g p- g p wg pg g -g (IT) 1992 xp g p-
gw w 1992 1997. I pp, I g -g g g ( , g ) IT g - p gw. B , I p g .
I p - p g F Mg I 1970 1980 US C B () . I C R T 1972, 1977, 1982 --p p g 4.5 p 1982. T g - . G w , w p . T -g , I 1984. E p, p --p g ( , p) p- . W p , p w p .
Igg p, I gg
w - g, g . I , pp g , g pp.
I p w ---p . I ,I p p p - g p . T q $28 p , p , gg g w x p g. A - p , p p,
g, p p p . T g gg - p, , w p w g.
T g gp w - p g- xp g p g w p . I , p g U PC (UPC) w g p pg. A , 2,000 g g p p p. B 1984, 13,000 g p, g g - (Dp R 1997). Lg- p -g, w, , p g (EDI) w pp, g p (A . 1999).
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VoL. 4 no. 3 3BASkER: RAISIng ThE BARCodE SCAnnER
T pp . L, L, M (1985, 1987, 1992) D, F, Mg (2009) , p, - US p ,
z p, p - p , g p w g w g g. B, Gj, W (2011) ggg p Ep -p p . I p - w p g. F, p. S, gg w - C R T w gp pg p , p w .
T pp p -g p ( , Bj H 2003;Jg, H, S 2008; M, H, W 2009). U , w 1990, p g , g g . A w p w-w x. S p p- p qpp w UPC ().
Ag I - , - gg w x w .
T pp gz w. S I p g g . S II . S IIIV p w w-g q: W w p - p? Hww p g ? A j ?S VI . Ex p Appx.
I. Background
T , UPC, g w W F 1932 M . NJp W B S pp p 1949. Ip w gz, A H C U G P I C, gg , w, , w p gp MK & C., g . B p, F w p N A F C. W w p g IBM w IBM g . T A H C p p g- p, g w x g p :Kg, A&P, Sp V (H 2001, 145).
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Sg J 1974 M p T, O.1O x , p Scai Istallati u-date
F Mg I (FMI) g p g pg . A , w w, p p 1980. I J 1985, p mareti
news p 29 p p US w g -g (p D, F, Mg 2009). Fg 1 w FMI . B 1984, 10,000p . T g w p w p .
S p . T p g g
-1980 w, , , , gp q w pg g w (D, F, Mg 2009). T -, w g g UPC p -, UPC g . B S, ww IBM g 1970, p w w , w [] pgg, g (S 2008, 223). A w , w, pg wg . Ag , 1980 90 p g p UPC g (H A1984, 7). Z (1999) p w M 1974 N 1980
1C, 1974 Gw Yg (1997) w, w p g g w qp .
Figure 1. US Scanning Stores, 19741984
nte: S p p .
Srce: A F Mg I .
10,000
8,000
6,000
4,000
2,000
0
1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985
Cumulativescannerinsta
llations
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VoL. 4 no. 3 5BASkER: RAISIng ThE BARCodE SCAnnER
g p UPC -, 869 7,570 (Z 1999, 45).
T g w g p p g w , xp,
p g. T p g pg wg w g -g p qp- g (Sw 1977, 54). Fw p pp g, g w p p g jw (Sw 1977, 51). I, MK - qp j xp.2
E w x ppg. A -wg 50 p N 30, 1976, Sw (1977, 233), 23 [p] p p gp g , w 12 [] g p. T g 15 w . T p 1970 1980 p g , g . H A (1984, 204), xp, p g z p g 40 p p, g.
T, p p g . S g pg p p p g (B Gp1999), p w- p -
p w p p. M M (2009) p p p. S p g - , - g p - (M 2011). M p , IT g g p-, p p gw w (, .g., H 2001; B, K, V 2012).
II. Data
D F Mg I (FMI) p- Scai Istallati u-date p - , M p T,O, J 1974 1984. T w p FMI gg p , g IBM N CRg (NCR).3 M 12,000
2Bw (1997, 44) MK w , p. I w [ g], w xg .
3I S W FMI g p . FMI p pg D 1985, p pp , w p ggg pg. I p g 1985 p g 1984.
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6 AmericAn economic JournAl: Applied economics July 2012
o 1984, approximately a quarter o which are specifed to be upgrades. I ocus
my attention on v
installations. Figure 2 show the locations o scanners in the48 contiguous states as o December 1977 and December 1982.
Starting in 1976, the Longitudinal Business Database (LBD), maintained bythe US Census Bureau, lists, with ew exceptions, all business establishments with
paid employees in the United States. (Exceptions include most government-ownedor -operated establishments, establishments operated by religious organizations or
schools, and agricultural establishments.) The LBD is described in detail in Jarminand Miranda (2002), but I describe the most relevant eatures here. The LBD recordsthe existence o an establishment and provides the establishments industrial clas-
sifcation. Establishments are linked over time through a unique identifcation num-
ber, and are matched to the owning frm, which may be a single-establishment frm
or a multi-establishment frm. In the retail context, a multi-establishment frm is
usually a chain, although it can also be a frm operating one retail outlet and one or
more nonretail outlets (manuacturing acilities, warehouses, etc.). Since scanners
Panel A.1977
Panel B.1982Figure 2. US Scanner Locations, Year End 1977 and 1982
nt: Alaska and Hawaii installations not shown.
s: Authors calculations rom Food Marketing Institute data
http://pubs.aeaweb.org/action/showImage?doi=10.1257/app.4.3.1&iName=master.img-001.jpg&w=323&h=138http://pubs.aeaweb.org/action/showImage?doi=10.1257/app.4.3.1&iName=master.img-000.jpg&w=324&h=1367/30/2019 Bask Er Barcode Scanner
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VoL. 4 no. 3 7BASkER: RAISIng ThE BARCodE SCAnnER
w x g p, I w SIC 541: g , , p.
M p g w
LBD. T () ( ) LBD B Rg (BR), w x (.g., x g) ( -). I FMI , w , , w LBD/BR. T xz , I p zg g pg ggp . Dp , 3,683, 35 p, w g 1984 FMI w LBD. Fg 3 w p p.
T g 27 p ( 1978) 42 p ( 1982).Ng g. Dp z (.g., S . S.), ( p ) FMI w w LBD. O g , ppx FMI p , , , p p LBD . (W p-, I .) T LBD , . F, pg, p,. I p z , , , . M g w , xp, g , w pp LBD, . S,
Figure 3. Number of Scanner Installations Matched to Business Register, by Year
800
600
400
200
0
1976 1977 1978 1979 1980 1981 1982 1983 1984
Numberofmatchedinstallations
Year
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g w , j w , , , FMI g p p . W p -
g, I g LBD . T, w (SIC 541) . F, LBD wp p, p g . (Txp p p pp pp g .)
T LBD p pp, p , g p q g , C R T (CRT). T CRT p E C, w pqq g 2 7. T CRT p p w M 12, p, -. T CRT g 1977, I 1977 1982 CRT w LBD/FMI . Ag 1972 CRT , 1977 CRT p 1972 p,, p g .
T CRT p g g (, , p; p; pg -z ; p; ; g p), w
, p, (g pp pp g), , , g. I 1977 1982, I acae, i 1977 pg g p, w I xg p . T acae g w g 1977, 1977 p g g w 1 p g, p p w 1 p .
I p p CRT .T p , I p p 1 p p . I p g g g w .L p p w , w, w . I p g p p p w .F, p , w p g p . S, p , p p . T, p g g w - p- w, w . I p - , xp, g - w p- w, w p w, w p
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. Ug p p p . T p w w g w, . F, p g g w
g- w- w w g , g x w. I xp S IVA IVB.
E p p. A p w p .4A p p. T p g I ww w p, , , wg , p - w p. I - p , p w p, I g g p p w I p w w p.5
A p wg w gg p w w . F xp, Aw . (2001) wg g - w g . Ug C Pp S Ogg RGp 19791982, I w g g xp
7075 p w g g p, pg . Ag p (.g., , g, , .), , - gR2 7883 p. Sxp - (p- ). S g q x , - - pp g g p .
T 1 p p. F , p p : 19741977 ( 1),
19781982 ( 1), 19831984 ( 2). S 70 -1p , -1 p.T p g, , gp . T p : p ( 1982 g - CPI); p, w w; z, ; pg g.
4T , p - g p.
5A p p- ( p-) p F, Hwg, Kz (2002) D, J, K(2004). S F, Hwg, Kz(2002); H S (2009); B (2005) .
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S g g w 1 1, g 2, p. I , t- j p z w , g, , , p. Dp , p- g ppg . Fg 4 p 1972 g 1977 g 1 2.
I , z, p
wg , gw g p . C z 1 ppx 13 p p w w g- . T g pgg 1977 g x, . I w 1 1 p g 2.
T 2 p - , p . T CitScaerq 1 terg (w p-xg) t:
CitScaerit {0 xjc(i)/i Scaerjt = 01 xjc(i)/i Scaerjt > 0,w c(i)/i i , c(i) , xg i. T -
w g c t, I
Table 1Establishment Summary Statistics
S R P P C z Pg
1972: C 1 41 9,217 873 10.5 148 0.631C 1 902 8,207 721 12.1 245 0.589t- 0.206 0.043 0.005 0.127 0.049
C 1 943 8,250 727 12.0 240 0.591C 2 755 7,696 690 12.0 545 0.605t- 0.029 0.108 0.982 0.000 0.019
1977: C 1 70 11,526 1,121 11.3 142 0.632C 1 1,469 9,423 874 11.4 282 0.585t- 0.001 0.000 0.805 0.009 0.002
C 1 1,539 9,519 886 11.4 275 0.587C 2 1,156 8,373 779 11.5 557 0.604t- 0.000 0.000 0.610 0.000 0.000
1982: C 1 63 11,676 1,109 11.3 121 0.632C 1 2,053 8,917 867 11.1 303 0.585t- 0.000 0.001 0.640 0.002 0.003
C 1 2,116 8,999 874 11.1 298 0.587C 2 1,356 8,205 810 10.7 581 0.606t- 0.000 0.000 0.007 0.000 0.000
ntes: C 1 D 1977. C 1 J 1978 D 1982.C 1 1 1. C 2 1983 1984. R p 1982 ; z .
R p; x .F 1997 pg g.- t- q 1 1.- t- q 1 2.
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VoL. 4 no. 3 11BASkER: RAISIng ThE BARCodE SCAnnER
FMI g ( g g- ). I , w I LBD.
T 1970 pp - -g (SIC 541) 1972 1977C C D B(CCDB), ICPSR 7735, w pp gw 1970 1980. A jg p-g p, ppx 90 p - FMI/LBD g w CCDB . Pp g g , . C z . T ( 1) g w g . C 1 w g , 2
w g g. E gw 1970 1980.
III. Scanners and Productivity
A.dierece-i-diereces Estiates
I p g g -- p:
(1) (rctivit)it = i + t + Scaerit + it,
w rctivitit p p i t; i x ; t x ; Scaerit
1
0.5
0
4 6 8 10 4 6 8 10
Density
1972 1977
Log annual store revenue(Thousands of 1982 dollars)
Cohort 1a (1972 only) Cohort 1b Cohort 2
Figure 4. Log Annual Revenue by Cohort, 1972 and 1977
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g , , w pw g t, tg w .(I J 11.5_
12
. F w 10.5_12
, .) S it w .
I p - . M p 6,000 FMI g
p LBD CRT.Exg w FMI g t -. Ow, w . Dg -- .
O- p g , p-, p w p. B p w g g, p, g p gw pg , g p g w pw. I Appx, I p g w g - p.
Table 2City-Level Summary Statistics
CS1970
pp1972
19701980pp gw
1972: C1 0.000 153,321 151 0.241C1 0.000 114,155 120 0.124
t- 0.497 0.608 0.027
C1 0.000 115,807 122 0.129C2 0.000 207,279 217 0.118t- 0.000 0.000 0.471
1977: C1 0.157 225,319 241 0.188C1 0.100 111,574 118 0.173t- 0.124 0.010 0.010 0.761
C1 0.103 116,617 123 0.174C2 0.164 175,425 187 0.140t- 0.000 0.000 0.000 0.000
1982: C1 0.698 234,441 252 0.195C1 0.652 113,037 123 0.200t- 0.443 0.006 0.008 0.929
C1 0.653 116,581 126 0.200C2 0.633 184,209 199 0.151t- 0.221 0.000 0.000 0.001
ntes: S T 1. O CS T 1. O w p - .
I g () g , .S: CC D B(CCDB) ICPSR 7735.
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VoL. 4 no. 3 13BASkER: RAISIng ThE BARCodE SCAnnER
Rg p p w -pg . T q , g D 1984, x g w , 1983 1984 . T --p. Eg p
1970 1980 1983 1984, w 1984. I x , I p w p x w p w p.
M w T 3. I w 4.5 p p 1982.E p ( w), g -g -- x , w , w
g x w z, z (w g 1970 pp 1972 -g ), gw ( g pp w 1970 1980). T g x x w wp g p p. T g 1 p w , , . E g p, .g., p ( p p), .
I Appx, I p g p xp xp p g w 1977 1982 g 1981, 1982, 1983. T , w g- w (1,580 ), g 4.6 pp g.
Table 3Scanners Effect on Labor Productivity:Difference-in-Difference Estimates
(1) (2) (3)
Scaer 0.0451*** 0.0495*** 0.0454***(0.0084) (0.0105) (0.0084)
Scaert+1 0.0076(0.0099)
CitScaer 0.0068(0.0073)
Y FE S FE O 7,865 7,865 7,865
ntes: LHS g p. U p, 19721982. R p ( ).
*** Sg 1 p .**Sg 5 p .*Sg 10 p .
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B. Secifcati Tests
I , I - p- . F xp, p-g g wp
g, g gz, w, w , p g g. O p - p pp p p. Sp, t ( t+ 1) x g p t. T g x p, I
(2) (rctivit)it = i + t + tScaerit + t+1Scaeri,t+1 + it,
w Scaeri,t+1 q i w J D (t + 1), . C 2 T 3 w t t+1. T t q (1). T t+1 g, w g , w g g w g p. I, T A1 Appx w I p 1984, t+1 g g. Ug p pp - .
A p . I - w, , g wg g g p, - p w pw. (C, w w g wg g p.) T p -g p p p g w w -- . T w g , I
(3) (rctivit)it = i + t + Scaerit + CitScaerit + it,
w CitScaeritq terg , i, w . R w T 3.Ag, g, w z, w p , w, - g p wg.Rg p w g - - , w, p - . I , w, I - z. I p, I p w 1970pp w 100,000 w 10,000.
A p S IIIA wg q g p g ,
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VoL. 4 no. 3 15BASkER: RAISIng ThE BARCodE SCAnnER
p w p, g p- p p. W p , w p.O , p p xp p .
IV. Understanding the Productivity Eect
A.decsiti
I , I p p p, ---p , p, g p p. I - q (1), pg -- (revee)it (arll)it, p. T p w T 4.6
S (2008, 238) p g xp 1012 p , I
. T p ( g-), g g, 10 p j 1 p . T p, w, g, g, , 5.3 p, g g p p .
S g p p ppx$816,000 ( 1982 ), p , g, p g p $36,500 p , g g.
F p, p, p, M12 p, p M 12 p, p p M 12
6T w -- I p 1 p p g g.
Table 4Scanners Effect on Alternative Outcomes:Difference-in-Difference Estimates
R PA A M 12 p M p M p p p p
Scaer 0.0097 0.0535** 0.0299 0. 0022 0.0546***(0.0253) (0.0259) (0.0256) (0. 0173) (0.0210)
Y FE S FE
O 7,050 7,050 6,960 7,552 6,556
ntes: LHS ( g). U p, 19721982. R p ( ).
*** Sg 1 p .** Sg 5 p .
*Sg 10 p .
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p. F , I p w I p w q 1 M t; ( w) g.T w j p p -
. S w g, , p g p M 12 p w .
B. Scaers Sill Bias
T g p g pg p p g q w p .T w , w g p p w, p. I , -g. I , w , g - g Ag (2002). Sppg , W (1993) g - (W 1993, 106). Sppg , B (1972, 223) g w g w p w p p pp.
S CRT w , w wg, w , I x g . T g,g , gg x w .
A p, I C Pp S (CPS) Ogg RGp (ORG) 1979 1989. T CPS ORG , q 3-g SIC , p . O , ppx 6,000 p p wg (1970 628 1980 601, q SIC 541). A2,500 p p wg pp (1970 657 658 1980 630 631, q SIC 56), 5,000 p wg g- (1970 609 1980 591, q SIC 531 532).
I p g p w w w g pp , w w w p. F J 1979 D 1982, g w wg 9.3 p, p w 7.3 p wg pp g , w g . Ug xp, pg g w p, g w.
I p p 1983 1989 p, g w g- pg g g, w. I p, g wg p , 16 p, p w 46 p pp g -. T pg g w ,w g . G p z
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VoL. 4 no. 3 17BASkER: RAISIng ThE BARCodE SCAnnER
CPS w , p p , w g p g p, g , w g .7
T pp p. I w p p, g x --j g w . A g prressive grcergz 1976 g g [sic] R D pp, Tx F gp, g. W, p . O , q z (prressive grcer, M 1976,4042). S p w w -g p (prressive grcer, D 1976, 70) w w x: w [ P] gz, T C, x. B gz, T, x-. S [ w] w Pp ? (prressive grcer,D 1978, 56). C w , g p-g p 1975, 1984, w w , w gp g qp p p p , , x , p, (Hp 1984, 7).
O p j, w, .
T Dp L D Op T (DOT) p , g px g, j , -g (.g., , , ,).8 T p p g w DOT, p 1965, ( ), p 1991. E DOT px j : , pp, g. Bw 1965 1977, g px wg w pp g. Tpx g w p g g 8, g p-
p, 2, g pg g . Tw g px g w 1977 1991.T g g w wg ,
. S w- w, -g, w p w g p w qp w pp . T p . US Dp Agp, p B (1972, 218220), w , p 1819 p. T p- g w w ,
7T pp B MC (2001), w 19841986 19921994p wg g g w.
8M DOT L (2011) A, L, M (2003).
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18 AmERICAn EConomIC JouRnAL: AppLIEd EConomICS JuLy 2012
. Nwpp p, w w I w g p xp w p, g w g (, .g., W 1984).
A w g pg,
p pg p p, pg w -pg. T p w wp g p , g .U gp w pp -pg , g j. Dp R (1997) p M 1976, w , g w w g [J L Mg] C [ R FI]: L w g w p pg g, g w g p p (Dp R 1997,26).9 B 1989, p (W 1993, 102). S p w p g - . I Mg, w q p pg, p p- 1986 g pg 4080 w p p w, g $25,000 p (MG 1986).10
T , , gg -g j, g x ww w pp . A
w , -p, gg g.
C. Te Vale a Barce
T g p p w UPC. T p UPC, - . A B (1972, 220) , I p
p w , .I, I w p
g p g UPC . I pp- UPC p, I p .I, , I g pg (.g., x,, j) g, p g g UPC z p. I p p p.
9W (1993) xp g g p gz , w w - p w .
10I p pp, I p g p -pg g g p . T pg w w w p, w, pw x.
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VoL. 4 no. 3 19BASkER: RAISIng ThE BARCodE SCAnnER
T w p w p p- w gg p g , I p g - 1977 .11 W p ,
w x w p p xp w g.I
(4) (rctivit)it = i + t + t acaei
+ Scaerit + l Scaerit acaei + it,
wacae i 1977 pg g- p, w I xg p . T tacaeip p p pz pg g pz p, p.
R p T 5. W g, l, w p p g g g pg g, g, 0.21, g- 1 p . T p , p, w- p acae ppx 0.5 - p 0.7. T 0.6. T p p
pg g 1977 xp p , g, 1.4 p w ,p w 5.7 p p g 70 p pg g.
W I q (4) g p p , p. T p p, w g z .
Mg p g -
UPC q p. F, I - pg g w p. I p, UPC , pg g w g p. C, pg p p UPC . S, I pgg px w ( g g q-wg p pg pg g ). F Mg I p Mg N(1995, 200, T 6) g g -pg , p, p 1975 9,000, 14,000 1980.
11I 1972 p , I 1972 g.
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I g p 10,000 p w .
W p, w p
g . Ag p w 6,000 p 1977 w p g g 0.0035 p. G S IVA 4.5 pp g g $36,500 p , g - p g ppx $28p p .
S g p , -, p g p g w x- w p g g. T g
p w , w, , , p -g p p p . B q p -g g p .
T w- w x p , g UPC- p. I pp, p UPC xp p. T x p w g , p A H CIB Cp. (, H B), H. J. Hz Cp, G F Cp.(w K F), B-M (, B-M Sq), GM, I. p -g . A, g C Mw p -- -g (SIC 2035), xp, 50 p 1972
Table 5Scanners Effect on Labor Productivity: Interactions
(1) (2) (3)
Scaer 0.0914** 0.0460*** 0.0072(0.0436) (0.0085) (0.0241)
Scaer0.2115***
acae (0.0718)
1(Scaert> 0) 0.0234***(0.0091)
Scaer1982 0.0546**(0.0242)
Y FE Y FE pg S FE
Y 19771982 19721982 19721982O 4,913 7,863 7,863
ntes: LHS g p. U p. R p- ( ).1977 pg g.
*** Sg 1 p .** Sg 5 p .
*Sg 10 p .
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55 p 1977 62 p 1982. I , , p (SIC 2051), 29 p 33 p 34 p. Ap p q UPC g, p pp.
V. Cost-Beneft Analysis
T . Bw (1997, 8081)g w $50,000 $250,000 p w $60,000 w 1973. I 1978 Tie gz pp [] p g- - $110,000(Tie 1978). C w , Sw (1977, 5860) q p IBM 10- g $133,100 1976, g w g $7,000/. Sw (1977) p p,w w g . F, B (1972, 224), g MK& C. , p qp w x $150,000 w $4 ppx $100,000 w . T p g w p p .12Expg g , x $200,000 1977 , $300,000 1982 , g 10 p p p.
L j w w x , p q p w p- : - . (F g, B G 1999.) I p w wg xp p q p p. I, gg w g , - w p g , w , g w .
T pp g p -
w w. I q g , p p, - p g g w . T q I p - (-) - p p g :
(5) (rctivit)it = i + t + tScaerit + s1(Scaerit > 0) + it,
12V p Z (1999, 39), w q NCR p g $4,200 1974 $3,800 1980. T g w , , p N S g w g p $7,000$11,000 g (NS Cp S D, ). I w p.
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22 AmERICAn EConomIC JouRnAL: AppLIEd EConomICS JuLy 2012
w 1( ) . T sp p- p , - p p.
E w T 5. T p g
xp p g , - , g q . A J w Scaerit
11.5_12
- 1(Scaerit> 0) , g p g 2.2 p.E , p 4.6 p g .
T p p p p g. E , xp, - IBM p B S, g w g.T g g , p-g g, g p. O p , gz, w (Bj H 2003). I , p g p g g--g p. B w g , I w p pg--g - p .
T p g p . F, , g , g 1979, w w g . S,
g w U C C , w UPC g w 1977 1982 (Dp R 1997, 4, g 1). F, - p g g . B S g 1974: A xp p-, w w (S 2008, 159). IBM w p g pg g g -g p.
S p g g
p 19741982, wg w p p, pp .T , I
(6) (rctivit)it = i + t + Scaerit + 82Scaeri,82 + it.
E w T 5. T , w p- p D 1977, g, p , 1977 - g. T w1977 1982, 82, p , p g(5.65 p) 0 5 p .
A , w $816,000 p, g p- g 4.5 p q $36,500 p p.
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(Fg 1982 .) T w gg pg w pp , 10 p 1983 w pg 1984, w pg 1978. G g
, w p g p p ( MK& C. ).
T g- wg .C xp p p (E 2007 p p- p p w 1980 2004). U, I pp p, C p x pg g w g. I z, pw p .B, K, V (2012) p p, w gg p p ,ggg p w p z. Lg xp p g, g - .
T gg pg z w pg UPC p-. T 2,000 -
1974 8,700 1982 13,000 1984 (Dp R 1997). Ag x pg UPC , p w , p p p p. A , , w w , w,w, g. A , w , g, 1979 1980. L , w p g -wgp, p, .
A w pp pp g gp
- p, p pg w p. Ag xp z g- g pg - pg w g ( pg), p g w w pp .13 I p g , N (1999) p p g, wg xp p .14 C g g -g p g p ,
13L (1997) Bg . (2008) pg pg w ,, .
14M g, p g pg g, .g., w pg (ELDP) . p (H-L) pg. S E M (2008) pg g.
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24 AmERICAn EConomIC JouRnAL: AppLIEd EConomICS JuLy 2012
p ppg, p w p w p .15
A p z w g w w p p p g. T
- -g pp,w p j , w p. Ag A . (1999), xp, w g p p. S- pg, , w p g (EDI), g pg p,w p z g g (A . 1999). O g g p z p .
VI. Concluding Remarks
M - ICT 1990 2000, w g. T ppg g 1970 1980. Ug p- w- g , - p, I p w gp p. T wg,
p p w p .I - p 4.5 p,
g, g p p p - . E p , g, $28 g. Dp pp g, w p - .
T w p q , q , p. I , - ,
w, , w p g w - - p. N, gg - p, g , p g p -g. P xp g g A H C. A w,pp, g. I p , p w p , ww g. T g w p, g p p
15T g g g g .
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p, , w w w pg pg pg.
W xp p pg, p p w p w, g -
p? C w q, p pg p gg p p pg. M - g 1970 p . Sw w pgw p gg p- p, g - . I g wp p -q - (RFID), w w p . A , -, p g, pp g w p .
REFERENCES
Abernathy, Frederick H., John T. Dunlop, Janice H. Hammond, and David Weil. 1999. A Stitc iTie: Lea Retaili a te Trasrati maactriLesss r te Aarel aTextile Istries. Nw Y: Ox U P.
Abowd, John M., Francis Kramarz, David N. Margolis, and Kenneth R. Troske 2001. T RIp Ep Ep E Cp: A Cp F U S.Jral te Jaaese a Iteratial Ecies 15 (4): 41936.
Acemoglu, Daron. 2002. D T Cg.Review Ecic Sties 69 (4): 781809.
Autor, David H., Frank Levy, and Richard J. Murnane. 2003. T S C R T-g Cg: A Ep Exp. Qarterl Jral Ecics 118 (4): 12791333.
Basker, Emek. 2012. Rg B S: Tg P R S:D.Aerica Ecic Jral: Alie Ecics. p://x..g/10.1257/pp.4.3.1.
Basker, Emek, Shawn Klimek, and Pham Hoang Van. 2012. Spz I: T Gw RC R Bg Bx R F. Jral Ecics a maaeetStrate, 21 (3): 54182.
Beck, Jonathan, Michal Grajek, and Christian Wey. 2011. Eg L E D Nw Tg: B Sg C C. Alie Ecics 43 (14):173748.
Bergen, Mark, Daniel Levy, Sourav Ray, Paul H. Rubin, and Benjamin Zeliger. 2008. W LTg M L: O I I-Pg Lw.Jral Law a Ecics 51
(2): 20950.Betancourt, Roger R. 2005. Te Ecics Retaili a distribti. Np, MA: EwEg Pg L.
Bloom, Gordon F. 1972. prctivit i te F Istr. Cg, MA: MIT P.Bresnahan, Timothy F., and Shane Greenstein. 1999. Tg Cp S
Cp I.Jral Istrial Ecics 47 (1): 140.Brown, Stephen A. 1997.Revlti at te Cect Cter: Te Exlsi te Bar Ce. C-
g, MA: H U P.Brynjolsson, Erik, and Lorin M. Hitt. 2003. Cpg P: F-L E.Review
Ecics a Statistics 85 (4): 793808.Bucklin, Randolph E., and Sunil Gupta. 1999. C U UPC S D: I
A Pp.mareti Sciece 18 (3): 24773.Budd, John W., and Brian P. McCall. 2001. T G S Wg D: A S-P-
A R Rg L M I.Istrial a Labr RelatisReview 54 (2): 484501.
Das, Nilotpal, Evangelos M. Falaris, and James G. Mulligan. 2009. Vg E D- T-Sg Tg I.B. E. Jral Ecic Aalsis a plic:
Avaces i Ecic Aalsis a plic 9 (1): A 23.
http://dx.doi.org/10.1257/app.4.3.1http://dx.doi.org/10.1257/app.4.3.17/30/2019 Bask Er Barcode Scanner
26/27
26 AmERICAn EConomIC JouRnAL: AppLIEd EConomICS JuLy 2012
Doms, Mark E., Ron S. Jarmin, and Shawn D. Klimek. 2004. I Tg I F P US R T.Ecics Ivati a new Tecl 13 (7):595613.
Dunlop, John T., and Jan W. Rivkin. 1997. I Revlti at te Cect Cter: TeExlsi te Bar Ce, Sp A. Bw. Cg, MA: H U P.
Ellickson, Paul B. 2007. D S App Sp?RAnd Jral Ecics 38 (1):
4359.Ellickson, Paul B., and Sanjog Misra. 2008. Sp Pg Sg.mareti Sciece 27
(5): 81128.Food Marketing Institute. V . Sg I Up-D. Wg, DC: F M-
g I.Foster, Lucia, John Haltiwanger, and C. J. Krizan. 2002. T L w Aggg M P-
Gw: E R T. N B E R (NBER)Wg Pp 9120.
Foster, Lucia, John Haltiwanger, and C. J. Krizan. 2006. M S, R, Rg US R T S 1990. Review Ecics a Statistics 88(4): 74858.
Greenwood, Jeremy, and Mehmet Yorukoglu. 1997. 1974. Careie-Rcester Cerece Series
pblic plic 46 (1): 4995.Haberman, Alan L. 2001. Twet-Five years bei Bars: Te prceeis te Twet-Fit Ai-
versar te u.p.C. at te Sitsia Istitti, Seteber 30, 1999. Cg, MA: HU P.
Harmon, Craig K., and Russ Adams. 1984.Reai betwee te Lies: A Itrcti t Bar CeTecl. Pg, NH: N A Tg, I.
Haskel, Jonathan, and Raaella Sadun. 2009. E, Ex, L P UK Rg:E M D. I prcer daics: new Eviece r micr data, J.B J, T D, M J. R, 271302. Cg: U CgP.
Hephner, Thomas A. 1984. Te Casier. 2 . C: MGw-H B Cp.Holmes, Thomas J. 2001. B C L Fq D Sp.RAnd Jral
Ecics 32 (4): 70825.Jarmin, Ronald S., and Javier Miranda. 2002. T Lg B D. US CB Wg Pp 0217.
Jorgenson, Dale W., Mun S. Ho, and Kevin J. Stiroh. 2008. A Rp L US P- Gw Rg.Jral Ecic persectives 22 (1): 324.
Levin, Sharon G., Stanord L. Levin, and John B. Meisel. 1985. I D ED I. Ster Ecic Jral 51 (3): 67280.
Levin, Sharon G., Stanord L. Levin, and John B. Meisel. 1987. A D A Ap- Nw Tg: T C Op S.Review Ecics a Statistics 69(1): 1217.
Levin, Sharon G., Stanord L. Levin, and John B. Meisel. 1992. M S, U, I D: T C Op S G S. Review Ecics aStatistics 74 (2): 34550.
Levy, Daniel. 1997. T Mg M C: D E Lg US SpC. Qarterl Jral Ecics 112 (3): 791825.
Lin, Jerey. 2011. Tg Ap, C, Nw W.Review Ecics a Sta-tistics 93 (2): 55474.
Marrano, Mauro Giorgio, Jonathan Haskel, and Gavin Wallis. 2009. W Hpp Kw-g E? ICT, Ig I, B P R R.Review Ice a Wealt 55 (3): 686716.
Mas, Alexandre, and Enrico Moretti. 2009. P W.Aerica Ecic Review 99 (1): 11245.
Matsa, David A. 2011. Cp P Q Sp I. QarterlJral Ecics 126 (3): 153991.
McGrayne, Sharon. 1986. Sp E P-C S. Crais detrit Bsiess, F-
3.Messinger, Paul R., and Chakravarthi Narasimhan. 1995. H Pw S G C-
?mareti Sciece 14 (2): 189223.Nakamura, Leonard I. 1999. T M R Op R R. Caa-
ia Jral Ecics 32 (2): 40825.
7/30/2019 Bask Er Barcode Scanner
27/27
VoL. 4 no. 3 27BASkER: RAISIng ThE BARCodE SCAnnER
National Semiconductor Corporation Systems Division. U ( 1970).hw t B a Ser-aret Cect Sste: Te natial Seicctr datacecer. N S C-p.
Progressive Grocer. 1976. E F E: T S S P. prres-sive grcer55 (12): 6573.
Progressive Grocer. 1976. E P P O Bg F Sp. prressive gr-cer55 (3): 4043.
Progressive Grocer. 1978. F F-S Op E Sp Ew w S W. prressive grcer57 (12): 4955.
Selmeier, Bill. 2008. Sreai te Barce: persal meries Bill Seleier. L .Shaw, Robin N. 1977. U P C Sg S: T R Exp 1974
1976. PD . C U.Time. 1978. T Cp S: Cg O Tw. Tie, F 20. p://www..
//gz//0,9171,948019,00..US Census Bureau. (19761984). Lg B D. A C M
.US Census Bureau. (1972, 1977, 1982). C R T. Qq C M-
.
Walsh, John P. 1993. Serarets Trasre: uerstai oraizatial a TeclicalIvatis. Nw Bw, NJ: Rg U P.
Williams, Winston. 1984. T Nw Sp T Sp.new yr Ties, Sp 2. p://www../1984/09/02//-w-p--p..
Zimmerman, Gary Erem. 1999. T E Nw Ex Ap U P C: A Ep Ig G R M,19701980. Ug . H U.
http://www.time.com/time/magazine/article/0,9171,948019,00.htmlhttp://www.time.com/time/magazine/articlehttp://www.nytimes.com/1984/09/02/business/the-new-supermarket-takes-shape.htmlhttp://www.nytimes.com/1984/09/02/business/the-new-supermarket-takes-shape.htmlhttp://www.nytimes.com/1984/09/02/business/the-new-supermarket-takes-shape.htmlhttp://www.nytimes.com/1984/09/02/business/the-new-supermarket-takes-shape.htmlhttp://www.time.com/time/magazine/articlehttp://www.time.com/time/magazine/article/0,9171,948019,00.html