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Social Exchange Theory

Social Exchange Theory

We have discussed why we form relationships, what attracts us to others, and different types of love. But what determines whether we are satisfied with and stay in a relationship? One theory that provides an explanation is social exchange theory. According to social exchange theory, we act as naïve economists in keeping a tally of the ratio of costs and benefits of forming and maintaining a relationship with others (Rusbult & Van Lange, 2003).

Sternberg's Triangular Theory of Love

Sternberg's Triangular Theory of Love

We typically love the people with whom we form relationships, but the type of love we have for our family, friends, and lovers differs. Robert Sternberg (1986) proposed that there are three components of love: intimacy, passion, and commitment. These three components form a triangle that defines multiple types of love: this is known as Sternberg’s triangular theory of love. Intimacy is the sharing of details and intimate thoughts and emotions. Passion is the physical attraction—the flame in the...

Fractures: Bone Repair

Fractures: Bone Repair

Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the procedure...

Heart Failure I: Introduction

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Heart failure refers to a clinical syndrome caused by structural or functional cardiac disorders that prevent the heart from pumping an adequate amount of blood to meet the body's metabolic needs. This condition often arises from myocardial infarction or ischemia, leading to decreased cardiac output, reduced tissue perfusion, impaired gas exchange, fluid volume imbalance, and decreased functional ability.Heart failure can result from disruptions in the mechanisms that regulate cardiac output...

Social Exchange Theory

Social Exchange Theory

As formulated by John Thibaut and Harold Kelley, Social Exchange Theory explains human relationships as economic-like exchanges that maximize rewards and minimize costs. This theory suggests that individuals engage in relationships to gain benefits and reduce burdens, similar to economic transactions. It has been widely applied to various types of relationships, including romantic, professional, and social interactions.Rewards and Costs in RelationshipsRelationship rewards include emotional...

Ending Relationships

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The dissolution of intimate relationships presents complex emotional and psychological challenges, particularly when emotional bonds are strong, the relationship is long-standing, and perceived alternatives are limited. This distress often intensifies in romantic breakups, where the initiator may experience greater turmoil than the rejected partner. Contributing factors include residual attachment, guilt over causing pain, and uncertainty about how to manage the situation. The stress is further...

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Related Experiment Video

Updated: May 12, 2026

Implantation of Total Artificial Heart in Congenital Heart Disease

Implantation of Total Artificial Heart in Congenital Heart Disease

Published on: July 18, 2014

Hope for a broken heart?

Leslie A Leinwand¹

¹Department of Molecular, Cellular, and Developmental Biology, University of Colorado, Boulder, CO 80309, USA.

|September 25, 2003

Summary

Adult stem cells in the rat heart can become cardiac myocytes and repair injured heart tissue. These findings support the presence of cardiac stem cells and their regenerative potential in the adult heart.

Area of Science:

Cardiology
Regenerative Medicine
Stem Cell Biology

Background:

The potential for adult stem cells to differentiate into cardiac myocytes has been a subject of intense scientific debate.
Understanding the regenerative capacity of the adult heart is crucial for developing effective therapies for cardiac injury.

Discussion:

This study demonstrates that stem cells residing within the adult rat heart can differentiate into functional cardiac myocytes.
These cardiac stem cells, when transplanted into an injured adult rat heart, were shown to reconstitute damaged myocardium.
The observed reconstitution of heart tissue led to a measurable improvement in cardiac function.

Key Insights:

Evidence presented supports the existence of stem cells within the adult heart.

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Using an Isolated Working Rat Heart Model to Test Donor Heart Preservation Strategies

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Last Updated: May 12, 2026

Implantation of Total Artificial Heart in Congenital Heart Disease

Implantation of Total Artificial Heart in Congenital Heart Disease

Published on: July 18, 2014

Surgical Fixation of Sternal Fractures: Preoperative Planning and a Safe Surgical Technique Using Locked Titanium Plates and Depth Limited Drilling

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Published on: January 5, 2015

Using an Isolated Working Rat Heart Model to Test Donor Heart Preservation Strategies

Using an Isolated Working Rat Heart Model to Test Donor Heart Preservation Strategies

Published on: October 4, 2024

Demonstration of in vitro differentiation into cardiac myocytes.

Confirmation of in vivo cardiac repair and functional improvement after injury.

Outlook:

These findings are expected to significantly influence ongoing discussions regarding the presence and therapeutic potential of adult cardiac stem cells.
Further research into cardiac stem cell biology could pave the way for novel treatments for heart disease.
The study highlights the potential for endogenous stem cells to contribute to myocardial repair mechanisms.