digplanet beta 1: Athena
Share digplanet:


Applied sciences






















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".


Fidelity also denotes how accurate a copy is to 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", doesn't 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's 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". 
  2. ^ Hays, R.; Singer, M. (1989). Simulation fidelity in training system design: Bridging the gap between reality and training. Springer-Verlag. 
  3. ^ O’Donnell, Carol (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. Retrieved March 6, 2010. 

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Fidelity — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.

23706 news items


Sun, 27 Jul 2014 20:33:45 -0700

“We're really passionate about making a difference in everything we do,” said Nicole Gordon, Fidelity representative. “We want to look at the learning environment and how we can revitalize that and make it a learning environment that students are ...
Nashua Telegraph
Sat, 26 Jul 2014 19:15:00 -0700

NASHUA – More than 150 Fidelity Investments employees played hooky from work on Friday, but they had the boss's OK, given where they were heading. A horde of volunteers 160 strong took over Elm Street Middle School as part of the company's annual ...

Fresno Bee

Fresno Bee
Sun, 27 Jul 2014 17:22:30 -0700

Country singer LeAnn Rimes, right, and her husband, Eddie Cibrian, will be in a new reality TV series on VH1 called "LeAnn & Eddie." ISAAC BREKKEN — AP. Events Calendar. Search Events. Restaurants · Movies · Music · Add an Event · Performing Arts ...

New York Times

New York Times
Mon, 21 Jul 2014 11:56:15 -0700

It is the latest partnership that Fidelity has struck to open up direct access for retail customers to some of the most popular stock offerings in recent memory. Five years ago, the firm announced a similar arrangement with the capital markets arm of ...

Wall Street Journal

Wall Street Journal
Tue, 01 Jul 2014 13:26:58 -0700

Fidelity Investments and other asset managers are telling U.S. clients who live outside the country that they can no longer buy or trade mutual funds in their brokerage accounts. Stephen Austin, a spokesman for the financial-services firm, said the ...


Sat, 19 Jul 2014 00:32:44 -0700

His work at Fidelity, his home since 1999, is a far cry from Baker's original aspirations. He'd envisioned working the winter ski business and spending the off-season rock-climbing and selling photographs. But then dad intervened. According to Baker ...

Artesia Daily Press

Wed, 23 Jul 2014 10:03:57 -0700

BlackRock Inc. (BLK), Fidelity Investments and Vanguard Group Inc., three of the five largest money-market fund providers, expressed support for the new rules adopted today by the U.S. Securities and Exchange Commission to end years of debate on how to ...

Pensions & Investments

Fri, 18 Jul 2014 12:23:31 -0700

In the same period, the average balance in a Fidelity 401(k) also set a record, up nearly 13% to $91,000. The surging stock market drove most of the gains. Contributions from employees and employers accounted for about a quarter. The numbers look ...

Oops, we seem to be having trouble contacting Twitter

Talk About Fidelity

You can talk about Fidelity with people all over the world in our discussions.

Support Wikipedia

A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia. Please add your support for Wikipedia!