Example sentences of "have [verb] an [adj] effect " in BNC.

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1 If it 's ever proved that the mink has had an unacceptable effect on the environment , then it might be difficult , if not impossible , to redress the balance .
2 David Holford , the West Indies team manager , said : ‘ It seems that the strain of at last proving himself on English wickets last year has had an adverse effect on his form . ’
3 The world oil glut has had an adverse effect on South Africa 's grandiose ambitions as a coal exporter and also on its synthetic fuels business .
4 This is partly because the textiles and coverings have been treated with a sodium borate solution ( to increase their resistance to fire ) which has had an adverse effect on their appearance , and partly because most of the paintwork needs renewing .
5 No other act of his dismal presidency deserves mention ; but in an irony perhaps lost on his many detractors , his single decision in March 1852 to despatch a naval expedition to Japan , under the command of Commodore Matthew Perry , has had an ineradicable effect on world history .
6 As Mira sees it , this form of language use has had an indelible effect on human consciousness :
7 Table 4.4 , which summarises the main studies , shows that they all agree that regional policy has had an important effect on job creation though they disagree on how important it has been .
8 The provision of council housing has had an equalising effect both as regards reducing overcrowding and improving housing amenities among working-class people .
9 Plants grown in different environments can be expected to vary and the biologist 's job is sometimes to identify the environmental change which has caused an observed effect .
10 The latter , however , may also have had an adverse effect as many housing writers have pointed out .
11 We may accept that male cooperation was needed for fertility to fall , while at the same time arguing that the opinions of wives may also have had an important effect on husbands .
12 Two-thirds of current carers in McLaughlin 's ( 1991 ) study reported that caring had had an adverse effect on their living standards , regardless of their household income level .
13 He glanced up , an actor keen to verify whether he had achieved an intended effect .
14 A further feature of habituation is that it is supposed to show spontaneous recovery after a retention interval ; but although some studies of latent inhibition have revealed an equivalent effect ( e.g. Best and Gemberling 1977 ; McIntosh and Tarpy 1977 ; Westbrook , Provost , and Homewood 1982 ) , others have reported perfect retention of latent inhibition ( Siegel 1970 ; James 1971 ; Crowell and Anderson 1972 ) .
15 Clearly the improvement of the unemployment situation in Scotland during the 1970s owes a great deal to the new employment opportunities created by the discovery of North Sea oil , whereas the political troubles in Ireland have had an adverse effect on the local employment situation there .
16 On the contrary , the economic crisis in the rich countries has led , not surprisingly , to a still greater preoccupation with national economic issues and national development , one aspect of this situation being that aid to the developing countries by the Western nations who are members of the Organization for Economic Cooperation and Development ( OECD ) has declined as a percentage of their gross national product , while the various protectionist measures which they have taken in recent years have had an adverse effect upon the trade of the developing countries .
17 In the middle of the worst recession since the war we now have a new crop of party political broadcasts , and a fresh set of posters , both crafted with skill by the advertising industry 's finest , which have had an immediate effect .
18 It is clearly one area where government housing policies have had an equalising effect .
19 The ready availability of good-quality building stone in most parts of Scotland , the lack of timber in many northern areas , and the need to protect against strong winds and abundant rain , are a few of the many practical considerations which have had an important effect on the nature of Scottish buildings .
20 Britain 's pursuit of regional economic policies since the war , which by ‘ stick and carrot ’ incentives have steered or , more likely , encouraged forms of economic development to the disadvantaged regions , have had an indirect effect of the physical environment of many towns and cities .
21 Two previous experimental studies have shown an opposite effect , which may be due to the different species or sex of animals used and the methods of assessing cellular proliferation ( stathmokinetic technique v labelling index using tritiated thymidine ) .
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