\documentclass[12pt]{article}% Denis Girou

\usepackage{pstricks}
\pagestyle{empty}

\begin{document}

\psset{subgriddiv=0,gridcolor=lightgray}

\begin{pspicture}(9,4)
\begin{psclip}{\psellipse(3,2)(3,1)}
	\psellipse[fillstyle=solid,
		fillcolor=magenta](6,2)(3,1)
\end{psclip}
\psellipse(3,2)(3,1)
\psellipse(6,2)(3,1)
\rput(2,3.5){epistemische Indizes}
\psline{->}(2,3.2)(2,2)
\rput(7,0.5){faktische Indizes}
\psline{->}(7,0.7)(7,2)
\rput(4.5,2){\parbox{1.5cm}{\small realistische Indizes}}
\end{pspicture}

\begin{pspicture}(5,5)%\psgrid
  \newcommand{\SurfaceA}{\pscircle(1,1){1}}
  \newcommand{\SurfaceB}{\pscircle(2.5,3){2}}
  \SurfaceA\SurfaceB
  \begin{psclip}{\SurfaceA}
    \psset{fillstyle=solid,fillcolor=blue}
    \SurfaceB
  \end{psclip}
\end{pspicture}
%
\begin{pspicture}(5,5)%\psgrid
  \newcommand{\SurfaceA}{\psframe(1.5,0.5)(3.8,4.8)}
  \newcommand{\SurfaceB}{\psellipse(2,3.5)(1.5,1)}
  \newcommand{\SurfaceC}{\pscircle(3.5,3){1.5}}
  \newcommand{\SurfaceD}{\psdiamond(2.5,3)(2,1)}
  \SurfaceA\SurfaceB\SurfaceC\SurfaceD
  \begin{psclip}{\SurfaceA\SurfaceB\SurfaceC\SurfaceD}
    \psset{fillstyle=solid,fillcolor=red}
    \SurfaceA
  \end{psclip}
\end{pspicture}

\end{document}
