Psychological capital is employee’s psychological states beyond intellectual capital in obtaining and sustaining the competitive advantage.The results of Fatih Cetin (2011) study were in the hypothesized directions as organizational psychological capital was positively related to organizational commitment and job satisfaction attitudes.

For more details on the study you may consult the following link

http://www.academia.edu/1177490/The_Effects_of_the_Organizational_Psychological_Capital_on_the_attitudes_of_Commitment_and_Satisfaction_A_Public_Sample_in_Turkey

Jeevan, I suspect the answer to your question depends on the component of PsyCap in which you're interested.  For example, hope may have minimal effect on the relation between contract breach and, say, employee commitment because simply hoping that the situation will improve is unlikely to strengthen or weaken one's attachment to the organization.  On the other hand, resilience may significantly moderate the relation between breach and commitment because employees high in resilience are likely to more quickly bounce back from the adversity produced by breach than are their less resilient colleagues.  This is just a speculative illustration but I think it suggests that you consider differential effects of PsyCap components.  Hope this helps!   Tom

Here is one paper on PsyCap, one on resilience and one on attitudes. How you combine them is depending on your research:

Thanks @s.Beatrice Ewalds-Kvist

I would like to advise some of my contributions on the subject: - "The role of the" good soldier "in overcoming the first great economic crisis of the 21st century: The Psychological Contract and Organizational Citizenship Behaviors" ("El Protagonismo del" buen soldado "en la superación de la primera gran crisis económica del siglo XXI: El contrato psicológico y los comportamientos de ciudadanía organizacional") - which you can find among my contributions as "Articles" here in "RG" and in the same way, a Doctoral Thesis on the subject, directed by me; In both contributions -in addition- there is a lot of bibliography on the subject