Property talk:P1542

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has effect
effect of this item

Description	effect of this cause; inverse of has cause (P828). See Help:Modeling_causes for examples and discussion.
Represents	effect (Q926230), cause (Q2574811)
Data type	Item
Domain	None. Often but not always events or processes. See examples and discussion. (note: this should be moved to the property statements)
Allowed values	any item (note: this should be moved to the property statements)
Example	According to this template: American Civil War (Q8676) cause of Thirteenth Amendment to the United States Constitution (Q175613), Reconstruction Era (Q623429) According to statements in the property: mercury (Q925) → mercury poisoning (Q408089) American Civil War (Q8676) → Thirteenth Amendment to the United States Constitution (Q175613) Plasmodium malariae (Q133969) → malaria (Q12156) wheat (Q15645384) → gluten-related disorder (Q1367782) outsourcing (Q61515) → decline of Detroit (Q14804602) When possible, data should only be stored as statements
Tracking: usage	Category:Pages using Wikidata property P1542 (Q26250098)
See also	immediate cause of (P1536), product or material produced or service provided (P1056), end cause (P1534), contributing factor of (P1537)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties By value of property Most statements Fewest statements Most sitelinks Most linked wikis Total of sitelinks on items Most identifiers Fewest identifiers Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Database reports/Constraint violations/P1542 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 9,131 Main statement 7,926 86.8% of uses Qualifier 1,186 13% of uses Reference 19 0.2% of uses
Search for values

[create Create a translatable help page (preferably in English) for this property to be included here]

Allowed entity types are Wikibase item (Q29934200), Wikibase lexeme (Q51885771): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P1542#Entity types

Scope is as main value (Q54828448), as qualifier (Q54828449): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P1542#Scope, SPARQL

This property is being used by: ca:Plantilla:Infotaula de roca, ca:Plantilla:Infotaula esdeveniment, ca:Plantilla:Infotaula conflicte militar, ca:Plantilla:Infotaula d'element geològic, ca:Plantilla:Infotaula malaltia, ca:Plantilla:Infotaula malaltia/vell, ca:Plantilla:Infotaula d'ésser viu, ca:Plantilla:Infotaula raça de gat, ca:Plantilla:Infotaula ésser viu eu:Txantiloi:Gaixotasun infotaula, eu:Txantiloi:Taxotaula automatikoa, eu:Txantiloi:Taxotaula/probak be-x-old:Шаблён:Хвароба, be-x-old:Шаблён:Катастрофа ru:Шаблон:Универсальная карточка hy:Կաղապար:Տեղեկաքարտ Հիվանդություն և հիվանդագին վիճակներ din:Macuëc:Disease ts:Template:Infobox medical condition ha:Template:Automatic taxobox es:Plantilla:Ficha de evento mt:Mudell:Automatic taxobox jv:Cithakan:Infobox spesies, jv:Cithakan:Infobox species av:Шаблон:Универсалияб карточка, av:Халип:Универсалияб карточка inh:Ло:Универсальная карточка ban:Mal:Spesiesbox, ban:Mal:Infobox spesies, ban:Mal:Automatic taxobox, ban:Mal:Infobox spésiés gor:Templat:Infobox spesies bjn:Citakan:Infobox spesies, bjn:Citakan:Infobox spesies/bakpasir id:Templat:Infobox spesies, id:Templat:Infobox spesies/bakpasir, id:Templat:Infobox spesies/mirror kab:Talɣa:Automatic taxobox ace:Seunaleuëk:Infobox spesies incubator:Template:Wp/shi/Automatic taxobox, incubator:Template:Wp/zgh/Automatic taxobox nia:Templat:Infobox species, nia:Templat:Infobox spesies b:ru:Шаблон:Универсальная карточка tg:Шаблон:Қуттии ҳамагонӣ shi:Talɣa:Automatic taxobox zh-yue:Template:維基數據事件明細 b:eu:Txantiloi:Taxotaula automatikoa dag:Tɛmplet:Taxon vec:Modeło:Tassobox ga:Teimpléad:WD Bosca Sonraí Ainmhí Bheo, ga:Teimpléad:WD Bosca Sonraí Coinbhleacht Mhíleata, ga:Teimpléad:WD Bosca Sonraí Pór Cait be:Шаблон:Універсальная картка ary:موضيل:معلومات كائن, ary:موضيل:معلومات مطايفة عسكارية, ary:موضيل:معلومات مطايفة مدنية ast:Plantía:Taxotabla automática udm:Шаблон:Универсальная карточка min:Templat:Infobox spesies uk:Шаблон:Катастрофа be-tarask:Шаблён:Катастрофа, be-tarask:Шаблён:Хвароба yue:Template:維基數據事件明細 zgh:ⴰⵍⴱⵓⴹ:Automatic taxobox cv:Шаблон:Универсаллӑ карточка Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

Setting domain to instances of events is too restrictive

I've removed the template that set the domain of this property to instances of event. Much talk of causation does not construe its relata as events. Requiring (or inferring) the subjects of this property to be events would result in awkward formalisms.

This position has precedent (emphasis mine):

According to the philosophy researcher Jaegwon Kim (Kim 1993), any discussion of causation implies an ontological framework of entities among which causal relations are to hold, and also "an accompanying logical and semantical framework in which these entities can be talked about". He argues that the entities that represent either causes or effects are often events, but also conditions, states, phenomena, processes, and sometimes even facts, and that coherent causal talk is possible only within a coherent ontological framework of such states of affairs.

— Roxana Girju, Dan Moldovan (2002), Text Mining for Causal Relations

See also Help:Modeling_causes#Issues. Emw (talk) 12:37, 28 October 2014 (UTC)

Doesn't have effect

See Wikidata:Property proposal/does not have effect. --- Jura 09:54, 7 August 2019 (UTC)