BAI GIANG CONG TAC XA HOI

qua dOi hOi chting ta phai dap Ung dude met boat the tieu chi, hau hgt nhiing
tieu chi nay khong the dat &tee vdi each tipcan danh gia don gian. Chang
han met trong nhiing tieu chi quan trong la "mgi Wang quan thkic nghigm
gifia hai bign khong the dugs giai thich la do anh htiang dm met bign thit ba"
(Rubin & Babbie, 2001, p. 294). Khi eta:Mg ta lam vies vdi the khach hang,
cluing ta higt rang moi vies khde gang dang dien ra trong cube song cud ho.
Ho dang gia di, dang trai qua nhiing digu khac, dang tac dog lan nhau,
dang nghl, va dang cam nhan. Trong thktc tg, nth:Mg thu dang then ra trong
cube song cim ho con nhigu hon skt can thigp cud cluing ta. Vi vey, chUng ta
khong the ket luau rang chinh su tre glop cad ehting ta da mang lai nhung
thay d6i dude ghi nhan d khach hang. Mac dau, rat co the ski gidp dd la nhan
tg duy nhat c6 the mang lai ski hoan thanh muc tieu cita khach hang, thing có
kha nang nhiing digu trai nghigm khac, tkt no hoac kgt hOp vdi can thigp cita
cluing ta da mang lai ski thay doi. Cluing ta se kham pha van a nay khi
chUng ta nghien thiu cac thigt kg nh6m. Truck mat, khi ta dang xem xet
chign hide danh gia &Of day, xin ban lUu y skt nhac nha nay.
Cac Midi led he thong dan (Single-System Designs)
Cac thigt kg hg thgng don dttOc su dung cho cac trubng hOp ca nhan.
Thigt kg don tong co the dung IA the nhom hay cac gia dinh don, trong dO
cac van dg dgi Wong phu hdp vdi mo hinh chu the don (single-subject), en
nghia IA GO chung met muc tieu. Met li do cho vigc sit dung thuat ngil he
thgng don IA no eO the sit dung yeti the he thOng ngoai khach hang ea nhan.
Vi du vg truang hop ca nhan IA met hoc sinh ca biet hay trgn hoe. Vi du yg
trUang hop gia dinh la met cap vo thong bat hod vdi nhau vg chia se cOng
vigc nha. MO hinh chit the don dgi khi co nhiing each goi khac, chung han
nhU chi; the" dart, rt = 1, "day so thdi gian trudng hop don, nghien eau he
thgng thin, hay nghien citu Wong sr" (Yegis va ceng ski).
Qua trinh sit dung nhitng thigt kg nay la true tiSp. Nhan vies CTXH
chon met hanh vi cu the a can thiep, thu thap du lieu tit cac khach hang
va doi khi t3 nhung ngudi khac, ph'an tich d3 lieu va giai nghia kgt qua de
g6p phan the dinh higu qua eong vige. Cac nguon chi lieu co the rat khac
nhau. Chang han, khach hang co the hoan thanh cac bang theo clod, bang
theo doi nay cho bigt cac hanh vi va thdi gian xay ra hang ngay. Cac thanh
vien gia dinh, nkat vo/ chgng hay anh em cim khach hang hoac co quan,
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