Full model explaining purchase intention
| Coefficient (SE) | t | p | |
|---|---|---|---|
| Outcome variable: Purchase intention | |||
| X1: voice vs voice + IH | 0.00 (0.14) | 0.01 | 0.994 |
| X2: voice vs text | −0.25 (0.14) | −1.87 | 0.062 |
| X3: voice + IH vs text | −0.26 (0.13) | −1.97 | 0.049 |
| Perceived Human-likeness | 0.51 (0.04) | 14.08 | 0.000 |
| Cognitive Load | 0.07 (0.04) | 2.06 | 0.040 |
| Persuasion Knowledge | −0.22 (0.04) | −5.57 | 0.000 |
| Coefficient (SE) | |||
|---|---|---|---|
| X1: voice vs voice + IH | 0.00 (0.14) | 0.01 | 0.994 |
| X2: voice vs text | −0.25 (0.14) | −1.87 | 0.062 |
| X3: voice + IH vs text | −0.26 (0.13) | −1.97 | 0.049 |
| Perceived Human-likeness | 0.51 (0.04) | 14.08 | 0.000 |
| Cognitive Load | 0.07 (0.04) | 2.06 | 0.040 |
| Persuasion Knowledge | −0.22 (0.04) | −5.57 | 0.000 |
| Indirect effects | |||
|---|---|---|---|
| Confidence interval | |||
| Effect (SE) | Lower limit | Upper limit | |
| X1 → HL → PI | 0.10 (0.09) | −0.07 | 0.29 |
| X2 → HL → PI | 0.32 (0.09) | 0.15 | 0.50 |
| X3 → HL → PI | 0.22 (0.09) | 0.04 | 0.41 |
| X1 → CL → PI | 0.00 (0.02) | −0.03 | 0.03 |
| X2 → CL → PI | −0.03 (0.02) | −0.09 | 0.00 |
| X3 → CL → PI | −0.03 (0.02) | −0.07 | 0.00 |
| X1 → PK → PI | −0.04 (0.04) | −0.11 | 0.03 |
| X2 → PK → PI | −0.03 (0.03) | −0.10 | 0.03 |
| X3 → PK → PI | 0.002 (0.04) | −0.07 | 0.07 |
| X1 → HL → PK → PI | 0.00 (0.00) | −0.01 | 0.00 |
| X2 → HL → PK → PI | −0.01 (0.01) | −0.02 | 0.01 |
| X3 → HL → PK → PI | −0.004 (0.01) | −0.02 | 0.01 |
| X1 → CL → PK → PI | 0.00 (0.01) | −0.01 | 0.01 |
| X2 → CL → PK → PI | 0.01 (0.01) | 0.0003 | 0.03 |
| X3 → CL → PK → PI | 0.01 (0.01) | 0.0003 | 0.03 |
| Confidence interval | |||
|---|---|---|---|
| Effect (SE) | Lower limit | Upper limit | |
| X1 → HL → PI | 0.10 (0.09) | −0.07 | 0.29 |
| X2 → HL → PI | 0.32 (0.09) | 0.15 | 0.50 |
| X3 → HL → PI | 0.22 (0.09) | 0.04 | 0.41 |
| X1 → CL → PI | 0.00 (0.02) | −0.03 | 0.03 |
| X2 → CL → PI | −0.03 (0.02) | −0.09 | 0.00 |
| X3 → CL → PI | −0.03 (0.02) | −0.07 | 0.00 |
| X1 → PK → PI | −0.04 (0.04) | −0.11 | 0.03 |
| X2 → PK → PI | −0.03 (0.03) | −0.10 | 0.03 |
| X3 → PK → PI | 0.002 (0.04) | −0.07 | 0.07 |
| X1 → HL → PK → PI | 0.00 (0.00) | −0.01 | 0.00 |
| X2 → HL → PK → PI | −0.01 (0.01) | −0.02 | 0.01 |
| X3 → HL → PK → PI | −0.004 (0.01) | −0.02 | 0.01 |
| X1 → CL → PK → PI | 0.00 (0.01) | −0.01 | 0.01 |
| X2 → CL → PK → PI | 0.01 (0.01) | 0.0003 | 0.03 |
| X3 → CL → PK → PI | 0.01 (0.01) | 0.0003 | 0.03 |
Note(s): F(8, 441) = 32.89, p < 0.001, R2 = 0.37; controlled for brand familiarity, familiarity with virtual assistants, modality preference; IH = Interaction History; HL = Perceived Human-likeness; CL = Cognitive Load; PK = Persuasion Knowledge; PI = Purchase Intention
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