Develop a detailed research report to support the topic "Impact of the Construction Mafia on the South African Economy".

This research should support the below headings and also include realistic data samples.

Research Design & Methodology

$($Include sub$-$headings$)$:

$1.$ Overarching Research Paradigm;

$2.$ Research Design,

$3.$ Sampling,

$4.$ Data Collection and Measurement Instruments;

$5.$ Proposed Data Analysis;

$6.$ Expected Results $[$based on research support$]$

Conclusions & Recommendations conditional on expected results $/$findings

$($Include sub$-$headings$)$:

$1.$ Conclusion of proposal in summary,

$2.$ Recommendation $($on expected results$)$

Evaluation of ethical risks associated with the research

$($Include sub$-$headings$)$:

$1)$ Purpose of the examination of ethical risks;

$2)$ Risks connected to the involvement of people in behavioural research,

$3)$ Description of what participation will entail;

$4)$ Voluntary participation withdrawal option;

$5)$ Informed Consent and the Health Professions Act no $56$ of $1974$;

$6)$ Applicable Institutional Permissions$)$

Provide Harvard references $($alphabetical reference list$)$