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For other uses, see Fidelity (disambiguation).
Palazzo Ducale in Venice: capital # 28 in the porch, featuring Virtues and vices - In fidelitate nulli gero (Fidelity)

Fidelity is the quality of being faithful or loyal. Its original meaning regarded duty in a broader sense than the related concept of fealty. Both derive from the Latin word fidēlis, meaning "faithful or loyal". In the City of London financial markets it has traditionally been used in the sense encompassed in the motto "My word is my bond".


Fidelity also denotes how accurately a copy reproduces its source. For example, a worn gramophone record will have a lower fidelity than one in good condition, and a recording made by a low budget record company in the early 20th century is likely to have significantly less audio fidelity than a good modern recording. In the 1950s, the terms "high fidelity" or "hi-fi" were popularized for equipment and recordings which exhibited more accurate sound reproduction. The converse term "lo-fi", does not necessarily mean "low fidelity", rather that the production ethic aims for "gritty authenticity" over perfect production. Similarly in electronics, fidelity refers to the correspondence of the output signal to the input signal, rather than sound quality, as in the popular internet connection technology "Wi-Fi".

Scientific modelling and simulation[edit]

In the fields of scientific modelling and simulation, fidelity refers to the degree to which a model or simulation reproduces the state and behaviour of a real world object, feature or condition. Fidelity is therefore a measure of the realism of a model or simulation.[1] Simulation fidelity has also been described in the past as "degree of similarity".[2]

Program evaluation[edit]

In the field of program evaluation, the term fidelity denotes how closely a set of procedures were implemented as they were supposed to have been. For example, it is difficult to draw conclusions from a study about formative assessment in school classrooms if the teachers are not able or willing to follow the procedures they received in training.[3]


  1. ^ "SISO-REF-002-1999: Fidelity Implementation Study Group Report". Simulation Interoperability Standards Organization. 1999. Retrieved January 2, 2015. 
  2. ^ Hays, R. T.; Singer, M. J. (1989). Simulation fidelity in training system design: Bridging the gap between reality and training. Springer-Verlag. 
  3. ^ O'Donnell, Carol L. (2008). "Defining, Conceptualizing, and Measuring Fidelity of Implementation and Its Relationship to Outcomes in K–12 Curriculum Intervention Research". Review of Educational Research 78 (1): 33–84. doi:10.3102/0034654307313793. 

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Fidelity — Please support Wikipedia.
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6302341 news items

Tue, 01 Sep 2015 04:52:43 -0700

"More significant than Fidelity and playing guesswork around how much revenue is lost there is the competitive challenges in the high-end card space," Jason Arnold, an analyst with RBC (RBC) , said in an interview. "Their contracts are for a fixed ...

Boston Business Journal

Banker & Tradesman
Wed, 02 Sep 2015 09:18:45 -0700

Leominster-headquartered Fidelity Bank will acquire Barre Savings Bank in a deal anticipated to close in next year's second quarter. According to a joint statement, the combined institution, which will operate under Fidelity's name and charter, will be ...
American Banker
Tue, 01 Sep 2015 12:30:00 -0700

Barre Savings Bank in Barre, Mass., has agreed to merge with Fidelity Bank in Leominster, Mass. To continue, please sign in or subscribe. FREE WEEK. STARTING AUGUST 31ST. Full access to banking's most comprehensive daily report; Daily, weekly, and ...


Sun, 07 Jun 2015 02:56:15 -0700

Fidelity Worldwide Investment's Richard Lewis discusses the outlook for global equities and monetary policy. He speaks with Manus Cranny on Bloomberg Television's “The Pulse.” (Source: Bloomberg) ...
Tue, 01 Sep 2015 12:07:30 -0700

Growth in surety and fidelity premiums lines has trailed overall property/casualty insurance industry premium by a significant margin. Surety premiums in particular have suffered from slow economic growth and limited construction activity, especially ...
Dakota Financial News
Wed, 02 Sep 2015 07:15:00 -0700

Fidelity & Guaranty Life logo Shares of Fidelity & Guaranty Life (NYSE:FGL) have earned a consensus broker rating score of 2.00 (Buy) from the three brokers that cover the stock, Zacks Investment Research reports. One research analyst has rated the ...
Motley Fool
Tue, 01 Sep 2015 11:56:15 -0700

Two more popular mutual funds out there that have an exclusive focus on picking stocks from this sector are the Fidelity Select Pharmaceuticals Portfolio (MUTF: FPHAX) and the Fidelity Select Health Care Portfolio (MUTF: FSPHX). Long-term investors in ...
Markets Daily
Wed, 02 Sep 2015 07:37:30 -0700

According to the analysts polled by Zack's Research, Fidelity National Financial, Inc. (NYSE:FNF) has been given a one year consensus price target range of $43 to $50. The average, or consensus number of the polled firms, yields a mean of $46.25.

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