Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Expected Value01:15

Expected Value

7.8K
The expected value is known as the "long-term" average or mean. This means that over the long term of experimenting over and over, you would expect this average. The expected average is represented by the symbol μ. It is calculated as follows:
7.8K
Determination of Expected Frequency01:08

Determination of Expected Frequency

2.6K
Suppose one wants to test independence between the two variables of a contingency table. The values in the table constitute the observed frequencies of the dataset. But how does one determine the expected frequency of the dataset? One of the important assumptions is that the two variables are independent, which means the variables do not influence each other. For independent variables, the statistical probability of any event involving both variables is calculated by multiplying the individual...
2.6K
Expected Frequencies in Goodness-of-Fit Tests01:19

Expected Frequencies in Goodness-of-Fit Tests

8.7K
A goodness-of-fit test is conducted to determine whether the observed frequency values are statistically similar to the frequencies expected for the dataset. Suppose the expected frequencies for a dataset are equal such as when predicting the frequency of any number appearing when casting a die. In that case, the expected frequency is the ratio of the total number of observations (n)  to the number of categories (k).
8.7K
Characteristics of Practical Op Amps01:16

Characteristics of Practical Op Amps

859
A difference amplifier, a crucial component in numerous electronic devices, ideally amplifies only the difference-mode signal, which is the difference between two input signals. However, in practical circuits, the output voltage depends on both the differential gain and the common-mode gain.
The ratio of differential gain to the common-mode gain is defined as the common-mode rejection ratio (CMRR). This ratio quantifies the ability of operational amplifiers (op-amps) to reject common-mode...
859
Theoretical Foundations of Nursing Practice01:30

Theoretical Foundations of Nursing Practice

17.4K
Theories play an essential role in organizing patient care. Theories refer to a proposed or followed belief, policy, or procedure that is the basis for action. Nursing theories are knowledge-based concepts that guide nurses' actions, influence nursing education and practice, and allow nurses to care for their patients.
Theories provide a perspective to assess patients' conditions and organize data and methods. They also assist in analyzing and interpreting information. They represent a...
17.4K
Equivalent Circuits for Practical Transformers01:28

Equivalent Circuits for Practical Transformers

1.4K
The practical equivalent circuits of single-phase two-winding transformers exhibit significant deviations from their idealized versions due to the inherent properties of winding resistance and finite core permeability. These properties result in real and reactive power losses, affecting the transformer's performance. Understanding these deviations is crucial for designing more efficient transformers.
In a practical transformer, each winding exhibits resistance and leakage reactance. The...
1.4K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke·2026
Same author

Protocol for a feasibility study, without control group, of a combined treatment for PTSD and difficulties in emotion regulation for patients with substance use disorder.

Pilot and feasibility studies·2026
Same author

Managing in war, planning for peace: second report of The Lancet Psychiatry Commission on mental health in Ukraine.

The lancet. Psychiatry·2026
Same author

The mental health toll of the Iran-Israel-US conflict on the Iranian diaspora.

The Lancet regional health. Europe·2026
Same author

Improving social functioning in people with substance use and mental health disorders using virtual reality (ROPVR): study protocol for a multi-center, pragmatic randomized controlled trial.

Trials·2026
Same author

Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke·2026
Same journal

Epidemiological Profile of Repeated Self-Harm Presentations to Healthcare Services in a Brazilian Urban Centre (Vitoria, ES).

Crisis·2026
Same journal

Innovations in Crisis Line Interventions.

Crisis·2026
Same journal

Lived Experience of Suicide in Suicide Researchers.

Crisis·2026
Same journal

Eco-Emotions and Suicidal Ideation and Behavior.

Crisis·2026
Same journal

How Reliable Are Official Annual Suicide Numbers in Sri Lanka?

Crisis·2026
Same journal

Impact of Railway Delay Announcements on Suicide-Related Associations, Emotions, and Announcement Appreciation.

Crisis·2026
See all related articles

Related Experiment Video

Updated: Jan 28, 2026

A Practical Guide to Phylogenetics for Nonexperts
12:00

A Practical Guide to Phylogenetics for Nonexperts

Published on: February 5, 2014

36.1K

Caught Between Expectations and the Practice Field.

Ingvild Engh Vattø1,2, Lars Lien3,4, Valerie DeMarinis1,5,6

  • 1Center for Psychology of Religion, Innlandet Hospital Trust, Hamar, Norway.

Crisis
|March 1, 2019
PubMed
Summary
This summary is machine-generated.

Volunteer crisis line responders often face challenges when the reality of their role differs from expectations. Many provide ongoing support for loneliness rather than acute suicide prevention.

Keywords:
crisis interventionfocus groupshotlinesqualitative researchsuicide prevention

More Related Videos

Practical Methodology of Cognitive Tasks Within a Navigational Assessment
05:19

Practical Methodology of Cognitive Tasks Within a Navigational Assessment

Published on: June 1, 2015

14.0K
Using Wavelet Entropy to Demonstrate how Mindfulness Practice Increases Coordination between Irregular Cerebral and Cardiac Activities
08:08

Using Wavelet Entropy to Demonstrate how Mindfulness Practice Increases Coordination between Irregular Cerebral and Cardiac Activities

Published on: May 10, 2017

15.2K

Related Experiment Videos

Last Updated: Jan 28, 2026

A Practical Guide to Phylogenetics for Nonexperts
12:00

A Practical Guide to Phylogenetics for Nonexperts

Published on: February 5, 2014

36.1K
Practical Methodology of Cognitive Tasks Within a Navigational Assessment
05:19

Practical Methodology of Cognitive Tasks Within a Navigational Assessment

Published on: June 1, 2015

14.0K
Using Wavelet Entropy to Demonstrate how Mindfulness Practice Increases Coordination between Irregular Cerebral and Cardiac Activities
08:08

Using Wavelet Entropy to Demonstrate how Mindfulness Practice Increases Coordination between Irregular Cerebral and Cardiac Activities

Published on: May 10, 2017

15.2K

Area of Science:

  • Psychology
  • Sociology
  • Public Health

Background:

  • Volunteer crisis line responders are crucial for global suicide prevention efforts.
  • Diaconal crisis lines in Norway utilize volunteers to support individuals in distress.

Purpose of the Study:

  • To explore the challenges faced by volunteers in a Norwegian diaconal crisis line.
  • To understand how these volunteers navigated their experienced challenges.

Main Methods:

  • A qualitative, explorative study design was employed.
  • Data was collected through four focus group interviews with 27 volunteers.
  • Systematic text condensation was used for data analysis.

Main Results:

  • Volunteers perceived a significant gap between their expectations and the practical application of their role.
  • A primary challenge was the crisis line's function as a source of ongoing support for issues like loneliness and mental health, rather than acute suicide intervention.
  • This perception created a mismatch with the intended suicide prevention focus.

Conclusions:

  • A need exists for standardized responses to callers seeking ongoing support.
  • Volunteer training programs should incorporate strategies for managing these expectations and providing appropriate, uniform support.
  • Addressing the gap between perceived and actual crisis line functions is essential for volunteer effectiveness and well-being.