In this context, a network effect is a positive feedback loop whereby platforms with stronger ecosystem of developers, content and service providers attract more customers.

FORBES: Who Wins, iOS or Android? Both, But Pity Everyone Else.

"The effectiveness of acupuncture for (seasonal allergies) compared with other antiallergic interventions and the possible underlying mechanisms of any effect, including context effects, need to be addressed in further research, " they write in the study.

CNN: Acupuncture may be antidote for allergies

Now these are measures which have been issues before, in the context for example of North Korea, and they have had an effect.

NPR: U.S. Intelligence Report Complicates Iran Debate

Dr Moffitt's team (the actual work was led by her colleague, Avshalom Caspi) looked at the effect on intelligence of breastfeeding, but in a genetic context.

ECONOMIST: Intelligence and genetics

Its application can scarcely be described as wide, but it could one day be used to great effect in horror films and has already been imitated once in such a context.

ECONOMIST: A new roll for film

At the top of this you said something to the effect of Republicans made a choice here to let these sequester cuts go through, the context of it.

WHITEHOUSE: Press Briefing