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

Persuasion Strategies01:52

Persuasion Strategies

Researchers have tested many persuasion strategies, including the foot-in-the door and the door-in-the-face techniques, in a variety of contexts. Ultimately, the principles are effective in selling products and changing people’s attitude, ideas, and behaviors (Cialdini & Goldstein, 2004).
Altruism01:03

Altruism

Altruistic behaviors are “unselfish” behaviors—those that help another individual at the expense of the individual carrying out the behavior. Despite the negative consequences for the altruistic animal, these behaviors are thought to have evolved for several reasons.
Egoism and Altruism01:55

Egoism and Altruism

Voluntary behavior with the intent to help other people is called prosocial behavior. Why do people help other people? Is personal benefit such as feeling good about oneself the only reason people help one another?
Conversion of Units01:36

Conversion of Units

Sometimes, there is a need to convert from one unit to another one. For instance, reading a cookbook in which quantities are expressed in units of liters or ounces may require conversion of quantities to cups. Or, when looking up directions on how to get to a location, we may be interested to know how many miles we are going to walk. In this case, we would have to convert units of feet or meters to miles.
The first step in the unit conversion is to list the given units and the units required...
Methods of Medium Optimization01:28

Methods of Medium Optimization

Optimizing growth media enhances microbial proliferation and maximizes product yield. Statistical experimental design methodologies provide structured and reproducible approaches, offering progressively higher levels of robustness and efficiency.The One-Factor-at-a-Time (OFAT) MethodThe One-Factor-at-a-Time (OFAT) method involves adjusting a single variable while keeping all others constant. However, it cannot detect interactions between variables, often leading to suboptimal outcomes when...
Measurement: Derived Units03:02

Measurement: Derived Units

The International System of Units or SI system, by international agreement, has fixed measurement units for seven fundamental properties: length, mass, time, temperature, electric current, amount of substance, and luminosity. These are called the SI base units.

You might also read

Related Articles

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

Sort by
Same author

The psychology of negative-sum competition in strategic interactions.

Journal of personality and social psychology·2023
Same author

A framing effect in the judgment of discrimination.

Proceedings of the National Academy of Sciences of the United States of America·2022
Same author

People adapt more slowly to social income changes than to temporal income changes.

Journal of experimental psychology. Applied·2020
Same author

Idleness versus busyness.

Current opinion in psychology·2018
Same author

Hedonic nondurability revisited: A case for two types.

Journal of experimental psychology. General·2017
Same author

Numerical Nudging: Using an Accelerating Score to Enhance Performance.

Psychological science·2017

Related Experiment Video

Updated: May 9, 2026

Studying Food Reward and Motivation in Humans
12:09

Studying Food Reward and Motivation in Humans

Published on: March 19, 2014

Unit asking: a method to boost donations and beyond.

Christopher K Hsee1, Jiao Zhang, Zoe Y Lu

  • 11Booth School of Business, University of Chicago.

Psychological Science
|August 3, 2013
PubMed
Summary

A simple "unit-asking" method significantly boosts charitable donations by first asking donors about a hypothetical amount for one person. This psychological science technique increases giving for groups and has broad applications.

Keywords:
decision makingjudgment

More Related Videos

Induction of Alloantigen-specific Anergy in Human Peripheral Blood Mononuclear Cells by Alloantigen Stimulation with Co-stimulatory Signal Blockade
11:55

Induction of Alloantigen-specific Anergy in Human Peripheral Blood Mononuclear Cells by Alloantigen Stimulation with Co-stimulatory Signal Blockade

Published on: March 14, 2011

Methods for Presenting Real-world Objects Under Controlled Laboratory Conditions
06:54

Methods for Presenting Real-world Objects Under Controlled Laboratory Conditions

Published on: June 21, 2019

Related Experiment Videos

Last Updated: May 9, 2026

Studying Food Reward and Motivation in Humans
12:09

Studying Food Reward and Motivation in Humans

Published on: March 19, 2014

Induction of Alloantigen-specific Anergy in Human Peripheral Blood Mononuclear Cells by Alloantigen Stimulation with Co-stimulatory Signal Blockade
11:55

Induction of Alloantigen-specific Anergy in Human Peripheral Blood Mononuclear Cells by Alloantigen Stimulation with Co-stimulatory Signal Blockade

Published on: March 14, 2011

Methods for Presenting Real-world Objects Under Controlled Laboratory Conditions
06:54

Methods for Presenting Real-world Objects Under Controlled Laboratory Conditions

Published on: June 21, 2019

Area of Science:

  • Behavioral Economics
  • Psychological Science
  • Marketing and Fundraising

Background:

  • Charitable donation solicitation incurs significant annual costs.
  • Existing fundraising methods can be costly and complex.
  • Understanding psychological drivers of charitable giving is crucial.

Purpose of the Study:

  • To introduce a virtually costless method for increasing charitable donations.
  • To investigate the effectiveness of a 'unit-asking' technique in fundraising.
  • To explore the psychological underpinnings of the unit-asking effect.

Main Methods:

  • Implemented a 'unit-asking' method: donors first hypothetically allocate funds for one needy person, then for the group.
  • Conducted research in real-world fundraising events and scenario-based studies.
  • Compared the unit-asking method against traditional fundraising approaches.

Main Results:

  • The unit-asking method significantly increased donations for the group of needy persons.
  • This effect was observed in both paper-based and web-based fundraising scenarios.
  • The unit-asking effect is distinct from foot-in-the-door and identifiable-victim effects, stemming from initial scope insensitivity followed by scope consistency.

Conclusions:

  • A subtle psychological manipulation, the unit-asking method, offers a cost-effective way to boost charitable giving.
  • The findings have implications beyond fundraising, applicable to auctions and budget proposals.
  • Psychological science can yield substantial real-world impacts on financial contributions.