A CL65 FO RPTED THAT THE FLT ATTENDANT WAS INJURED DURING A TURB ENCOUNTER IN ZFW'S AIRSPACE AND DISAGREED WITH THE CAPT'S DECISION TO NOT DECLARE AN EMER.

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ENRTE FROM ICT TO DFW; THERE WAS A SCATTERED LINE OF TSTMS. APCHING ABOUT 80 MI FROM THE LINE; OUR RADAR WAS PAINTING THE AREA WITH SCATTERED GREEN CELLS. WITH THE INTENSITY TURNED UP FULL GAIN; THE AREA WAS STILL PAINTING GREEN WITH A LITTLE YELLOW. ALONG OUR FLT PATH THERE WAS NOTHING BEING PAINTED. AS WE APCHED THE LINE; WE NOTED GREEN AND YELLOW CELLS BEING PAINTED TO THE E AND W; BUT THERE WASN'T ANY WX BEING SHOWN ON OUR RTE. AS WE APCHED THE LINE; I TURNED ON THE SEATBELT SIGN AND TOLD THE FLT ATTENDANT THAT SHE MIGHT WANT TO SIT DOWN. AS WE FLEW THROUGH THE AREA THERE WAS OCCASIONAL LIGHT CHOP; BUT ALL IN ALL; THE RIDE WAS OK. AS WE WERE APCHING THE BACK SIDE OF THE AREA; WE ALL OF A SUDDEN GAINED A COUPLE OF HUNDRED FT AND THEN WERE THRUST UPWARD ABOUT 700 FT. UPON RECOVERING; WE FOUND OUT THE FLT ATTENDANT HAD BEEN INJURED. I QUERIED THE CAPT AS TO WHY WE HADN'T DECLARED AN EMER. HE SAID HE DIDN'T EXPECT ANY DELAYS GOING INTO DALLAS. I TOLD HIM IF IT WERE UP TO ME I WOULD STILL DECLARE AN EMER. IN RETROSPECT; I WOULD HAVE BETTER USED OUR DISPATCHER WHEN GOING THROUGH AN AREA OF SCATTERED STORMS.