What Influences Home Gardeners’ Food Waste Composting Intention in High-Rise Buildings in Dhaka Megacity, Bangladesh? An Integrated Model of TPB and DMP
Abstract
:1. Introduction
2. Literature Review
2.1. Theory of Planned Behavior
2.2. Dualistic Model of Passion
2.3. Hypotheses Development
2.4. Attitude
2.5. Subjective Norm
2.6. Perceived Behavioral Control
2.7. Harmonious Passion
2.8. Obsessive Passion
3. Methods
3.1. Measures of Constructs
3.2. Study Area & Respondents
3.3. Data Collection Procedure
3.4. Common Method Bias
3.5. PLS-SEM and ANN
3.6. Data Analysis Strategy
4. Results
4.1. Descriptive Statistics
4.2. Convergent Validity
4.3. Discriminant Validity
4.4. Structural Model
4.5. Hypotheses Testing
4.6. Outputs of Neural Network Analysis
4.7. Ranking of Factors
5. Discussion and Implications
5.1. Theoretical Implications
5.2. Practical Implications
6. Conclusions and Limitations
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Research Variable | Code | Questions | Reference Scale |
---|---|---|---|
Attitude | ATT1 | I think composting is rewarding. | [85] |
ATT2 | I think composting is hygienic. | ||
ATT3 | I think composting is a good idea. | ||
ATT4 | I think composting is necessary. | ||
Subjective norm | SN1 | Many of my friends find food waste composting is useful. | [85] |
SN2 | Many of my relatives/neighbours find food waste composting is useful. | ||
SN3 | People who influence my decisions think that I should compost food waste. | ||
Perceived behavioral control | PBC1 | I know what items can be composted among my food waste. | [85] |
PBC2 | I have tools to compost my food waste. | ||
PBC3 | I know how to compost my food waste. | ||
PBC4 | I have enough time for composting. | ||
Harmonious Passion | HP1 | My composting practices are in harmony with the other activities in my life. | [63] |
HP2 | The new things that I discover with composting activity allow me to appreciate it even more. | ||
HP3 | My composting activities are well integrated in my life. | ||
Obsessive Passion | OP1 | I have difficulties controlling my urge to do composting at home. | [63] |
OP2 | My composting activities are so exciting that I sometimes lose control over them. | ||
OP3 | If I could, I would only do composting activities. | ||
Composting Intention | INT1 | I have the intention to buy the waste composting equipment. | [85] |
INT2 | I have the intention to compost kitchen waste/food waste. | ||
INT3 | I have level of planning to buy the composting equipment. | ||
INT4 | I have level of planning to compost kitchen waste/food waste. |
Variable | n | Percentage |
---|---|---|
Gender | ||
Male | 33 | 16.2% |
Female | 170 | 83.7% |
Employment status | ||
Employed | 54 | 26.6% |
Housewives/Non-employed | 149 | 73.3% |
Income level (Tk/month/family) | ||
Tk 10,000–30,000 | 16 | 7.8% |
Tk 30,001–50,000 | 75 | 36.9% |
Tk 50,001–70,000 | 23 | 11.33% |
Tk 70,001–90,000 | 77 | 43.8% |
>TK90,000 | 12 | 5.9% |
Age | ||
18–30 | 11 | 5.4% |
31–40 | 42 | 20.6% |
41–50 | 115 | 53.2% |
>51 | 35 | 17.2% |
Constructs | Standardized Factor Loading | Cronbach’s Alpha | Composite Reliability | rho_A | AVE |
---|---|---|---|---|---|
Attitude | ATT 1 0.763 ATT 2 0.827 ATT 3 0.839 ATT 4 0.794 | 0.821 | 0.881 | 0.827 | 0.650 |
Harmonious passion | HP 1 0.867 HP 2 0.877 HP 3 0.864 | 0.839 | 0.903 | 0.839 | 0.756 |
Intention | INT 1 0.743 INT 2 0.824 INT 3 0.767 INT 4 0.672 | 0.744 | 0.839 | 0.751 | 0.568 |
Obsessive passion | OP 1 0.923 OP 2 0.911 OP 3 0.892 | 0.899 | 0.934 | 0.998 | 0.825 |
Perceived behavioral control | PBC 1 0.827 PBC 2 0.825 PBC 3 0.830 PBC 4 0.820 | 0.845 | 0.896 | 0.847 | 0.682 |
Subjective norm | SN 1 0.901 SN 2 0.926 SN 3 0.907 | 0.898 | 0.937 | 0.905 | 0.831 |
ATT | HP | INT | OP | PBC | SN | |
---|---|---|---|---|---|---|
ATT | 0.806 | |||||
HP | 0.422 | 0.869 | ||||
INT | 0.588 | 0.599 | 0.753 | |||
OP | 0.010 | 0.076 | −0.055 | 0.908 | ||
PBC | 0.316 | 0.265 | 0.506 | 0.048 | 0.826 | |
SN | 0.350 | 0.372 | 0.560 | 0.167 | 0.337 | 0.912 |
Construct | R2 | Q2 |
---|---|---|
INT | 0.647 | 0.33 |
Relationship | Effect Size | Remark |
---|---|---|
ATT→ INT | 0.163 | Medium |
SN→ INT | 0.174 | Medium |
PBC→ INT | 0.141 | Small |
HP→INT | 0.223 | Medium |
OP→ INT | 0.055 | Small |
Hypothesis | Relationship | Path Co-Efficient | T Statistics | p-Value | Remark |
---|---|---|---|---|---|
H1 | ATT → INT | 0.277 *** | 5.298 | 0.000 | Supported |
H2 | SN → INT | 0.285 *** | 4.752 | 0.000 | Supported |
H3 | PBC → INT | 0.245 *** | 4.298 | 0.000 | Supported |
H4 | HP → INT | 0.322 *** | 6.359 | 0.000 | Supported |
H5 | OP → INT | −0.142 * | 2.381 | 0.018 | Supported |
Network | Sample | Training | Sample | Testing | Total Sample |
---|---|---|---|---|---|
ANN1 | 181 | 0.350 | 22 | 0.312 | 203 |
ANN2 | 187 | 0.456 | 16 | 0.343 | 203 |
ANN3 | 181 | 0.416 | 22 | 0.302 | 203 |
ANN4 | 179 | 0.388 | 24 | 0.372 | 203 |
ANN5 | 182 | 0.469 | 21 | 0.461 | 203 |
ANN6 | 183 | 0.362 | 20 | 0.376 | 203 |
ANN7 | 181 | 0.383 | 22 | 0.380 | 203 |
ANN8 | 185 | 0.338 | 18 | 0.453 | 203 |
ANN9 | 178 | 0.353 | 25 | 0.327 | 203 |
ANN10 | 182 | 0.401 | 21 | 0.228 | 203 |
Mean | - | 0.392 | Mean | 0.355 | - |
St. dev | - | 0.045 | St. dev | 0.070 | - |
Network | ATT | HP | OP | PBC | SN |
---|---|---|---|---|---|
1 | 0.64 | 1.00 | 0.29 | 0.89 | 0.88 |
2 | 0.65 | 0.58 | 0.09 | 1.00 | 0.19 |
3 | 0.72 | 1.00 | 0.33 | 0.98 | 0.82 |
4 | 1.00 | 0.97 | 0.10 | 0.44 | 0.55 |
5 | 0.47 | 0.71 | 0.28 | 1.00 | 0.25 |
6 | 0.68 | 1.00 | 0.29 | 0.67 | 0.72 |
7 | 0.65 | 1.00 | 0.10 | 0.56 | 0.59 |
8 | 0.80 | 1.00 | 0.25 | 0.68 | 0.49 |
9 | 1.00 | 0.79 | 0.22 | 0.78 | 0.55 |
10 | 0.59 | 1.00 | 0.26 | 0.72 | 0.75 |
Average importance | 0.72 | 0.90 | 0.22 | 0.77 | 0.58 |
Normalized importance (%) | 80% | 100% | 24% | 85% | 64% |
Ranking | 3 | 1 | 5 | 2 | 4 |
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Rahman, A.; Ai Ping, T.; Mubeen, S.K.; Mahmud, I.; Abbasi, G.A. What Influences Home Gardeners’ Food Waste Composting Intention in High-Rise Buildings in Dhaka Megacity, Bangladesh? An Integrated Model of TPB and DMP. Sustainability 2022, 14, 9400. https://doi.org/10.3390/su14159400
Rahman A, Ai Ping T, Mubeen SK, Mahmud I, Abbasi GA. What Influences Home Gardeners’ Food Waste Composting Intention in High-Rise Buildings in Dhaka Megacity, Bangladesh? An Integrated Model of TPB and DMP. Sustainability. 2022; 14(15):9400. https://doi.org/10.3390/su14159400
Chicago/Turabian StyleRahman, Ashikur, Teoh Ai Ping, Syeda Khadija Mubeen, Imran Mahmud, and Ghazanfer Ali Abbasi. 2022. "What Influences Home Gardeners’ Food Waste Composting Intention in High-Rise Buildings in Dhaka Megacity, Bangladesh? An Integrated Model of TPB and DMP" Sustainability 14, no. 15: 9400. https://doi.org/10.3390/su14159400