Alberto Galle and Charles Spence (2010) describe the positive effect of touch:

Elderly nursing home residents often feel unwelcome or unpleasant due to lack of physical contact with others.

You can read while listening music in the video

Bus drivers are more likely to give the passenger a free ride if they touch him while requesting.

People are more likely to give someone a cigarette if the request comes from a person who touches them at the same time.

Individuals who have been touched are more likely to agree to participate in the Mall Interview
Galle and Spence argue that a brief touch of any person can also strengthen emotional experiences. They explains that the amount and nature of contact differs from one culture to another:

In Italy, embracing and kissing on each cheek is considered as a normal and acceptable greeting.

In Japan, proper greetings have a respectable bow and lack of  touch.

Generally, the people of the United Kingdom rarely touch each other, touches in parts of northern Europe, and Asia France, Italy, or South America…

The lack of touch often causes negative manifestations, as an expression of “touching with reality”, a deeply experienced is often described as “touching”.

Touch (2001), in his book Tiffany Field, claims that in many circumstances, touch contact is strongt, than oral or emotional touch. It is important for the development, and health of children, as well as the physical and mental. In spite of this, Fields argues that many societies like existing societies are dangerously untouched-accordingly, many people are still suffering from the lack of touch-stimulus, which “touches hunger.”

Negative touch

There are situations in which the touch is considered negative, and excessive or unwanted touch can lead to criminal charges. Indeed, due to the powerful emotional effect of touch, people get an opportunity to disturb more interactive contact with verbal behavior. If there is a negative value, the perception of touch depends on the specific part of the body that is touched, and depends on the specific characteristics of the person who touches it (their gender, age and relationship with the touched person ). Touch on the face has been evaluated as a fairly unfair and harassment behavior, while a tap or pat on the shoulder is considered to be the least harrowing behavior

In his book, Bad for Us (2004), John Portman told a stinger about which men did not allow him to touch, and stressed that the division between seeing and touching made the world of moral difference for him: “This act was not itself; it was a matter of setting boundaries somewhere, so that nobody could be felt like everyone else.”

Romantic touch

Touch is important in creating and strengthening romantic relationships, harmonious physical affection is highly correlated with full relation and collaborative satisfaction. Apart from this, the solution to conflict is easier with more physical affection,conflicts are resolved more easily with strangulation, cuddling / holding, and kiss on lips.

The study of Galle and Spence (2010) reports shows that the person receiving contact with pre-stressed friends has seen a significant increase in the rate of cystolic and diastolic blood pressure and heart rate compared to the non-contact group. Tactile-stimulating non-sexual physical affection, such as bacteri-rugging and hugs, are also shown as value: women who report to get more throats from their partners in their past, were shown significantly lower in blood pressure levels. According to the women who have not much history of embracing their colleagues accordingly, affectionate physical behavior will lead to the events of stressful life. A reaction can be reduced.

Touch sensitivity, of course, is also associated with sexual stimulation, and changes in touch sensitivity can affect sexual function. Touch stimuli plays a very important role in making bond between mutual communication, sexuality and people, married people generally touch more pleasant, more loving and friendly, and do more sexual desire than singles.